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[Launchpad Bug Tracker <1693126@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 4.8.0-58.63

---------------
linux (4.8.0-58.63) yakkety; urgency=low

  * linux: 4.8.0-58.63 -proposed tracker (LP: #1700533)

  * CVE-2017-1000364
    - Revert "UBUNTU: SAUCE: mm: Only expand stack if guard area is hit"
    - Revert "mm: do not collapse stack gap into THP"
    - Revert "mm: enlarge stack guard gap"
    - mm: vma_adjust: remove superfluous confusing update in remove_next == 1 case
    - mm: larger stack guard gap, between vmas
    - mm: fix new crash in unmapped_area_topdown()
    - Allow stack to grow up to address space limit

linux (4.8.0-57.62) yakkety; urgency=low

  * linux: 4.8.0-57.62 -proposed tracker (LP: #1699035)

  * CVE-2017-1000364
    - SAUCE: mm: Only expand stack if guard area is hit

  * CVE-2017-7374
    - fscrypt: remove broken support for detecting keyring key revocation

  * CVE-2017-100363
    - char: lp: fix possible integer overflow in lp_setup()

  * CVE-2017-9242
    - ipv6: fix out of bound writes in __ip6_append_data()

  * CVE-2017-9075
    - sctp: do not inherit ipv6_{mc|ac|fl}_list from parent

  * CVE-2017-9074
    - ipv6: Prevent overrun when parsing v6 header options

  * CVE-2017-9076
    - ipv6/dccp: do not inherit ipv6_mc_list from parent

  * CVE-2017-9077
    - ipv6/dccp: do not inherit ipv6_mc_list from parent

  * CVE-2017-8890
    - dccp/tcp: do not inherit mc_list from parent

  * extend-diff-ignore should use exact matches (LP: #1693504)
    - [Packaging] exact extend-diff-ignore matches

  * APST quirk needed for Intel NVMe (LP: #1686592)
    - nvme: Quirk APST on Intel 600P/P3100 devices

  * regression: the 4.8 hwe kernel does not create the
    /sys/block/*/device/enclosure_device:* symlinks (LP: #1691899)
    - scsi: ses: Fix SAS device detection in enclosure

  * datapath: Add missing case OVS_TUNNEL_KEY_ATTR_PAD (LP: #1676679)
    - openvswitch: Add missing case OVS_TUNNEL_KEY_ATTR_PAD

  * connection flood to port 445 on mounting cifs volume under kernel
    (LP: #1686099)
    - cifs: Do not send echoes before Negotiate is complete

  * Support IPMI system interface on Cavium ThunderX (LP: #1688132)
    - i2c: octeon: Rename driver to prepare for split
    - i2c: octeon: Split the driver into two parts
    - [Config] CONFIG_I2C_THUNDERX=m
    - i2c: thunderx: Add i2c driver for ThunderX SOC
    - i2c: thunderx: Add SMBUS alert support
    - i2c: octeon,thunderx: Move register offsets to struct
    - i2c: octeon: Sort include files alphabetically
    - i2c: octeon: Use booleon values for booleon variables
    - i2c: octeon: thunderx: Add MAINTAINERS entry
    - i2c: octeon: Fix set SCL recovery function
    - i2c: octeon: Avoid sending STOP during recovery
    - i2c: octeon: Fix high-level controller status check
    - i2c: octeon: thunderx: TWSI software reset in recovery
    - i2c: octeon: thunderx: Remove double-check after interrupt
    - i2c: octeon: thunderx: Limit register access retries
    - i2c: thunderx: Enable HWMON class probing

  * CVE-2017-5577
    - drm/vc4: Return -EINVAL on the overflow checks failing.

  * Merlin SGMII fail on Ubuntu Xenial HWE kernel (LP: #1686305)
    - net: phy: marvell: fix Marvell 88E1512 used in SGMII mode
    - drivers: net: phy: xgene: Fix mdio write

  * Keyboard backlight control does not work on some dell laptops.
    (LP: #1693126)
    - platform/x86: dell-laptop: Add Latitude 7480 and others to the DMI whitelist
    - platform/x86: dell-laptop: Add keyboard backlight timeout AC settings

  * exec'ing a setuid binary from a threaded program sometimes fails to setuid
    (LP: #1672819)
    - SAUCE: exec: ensure file system accounting in check_unsafe_exec is correct

  * CVE-2017-7294
    - drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl()

 -- Stefan Bader <stefan.bader@xxxxxxxxxxxxx>  Mon, 26 Jun 2017 17:31:13
+0200

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

** CVE added: https://cve.mitre.org/cgi-
bin/cvename.cgi?name=2017-1000364

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-100363

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-5577

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-7294

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-7374

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-8890

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-9074

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-9075

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-9076

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-9077

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-9242

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

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https://bugs.launchpad.net/bugs/1693126

Title:
  Keyboard backlight control does not work on some dell laptops.

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Xenial:
  Fix Released
Status in linux source package in Yakkety:
  Fix Released
Status in linux source package in Zesty:
  Fix Committed

Bug description:
  [Impact]
  There's no sysfs node for some Dell laptop keyboard backlight control.

  Two issues here:
  1. No sysfs "/sys/devices/platform/dell-laptop/leds/dell::kbd_backlight"
  The patch fixes the issue by adding necessary DMI string to dmi whitelist table:

  commit 8d2c4538dbc7154c4aed1364db127a0e51dbd459
  Author: Alex Hung <alex.hung@xxxxxxxxxxxxx>
  Date:   Thu Feb 16 20:58:03 2017 +0800

      platform/x86: dell-laptop: Add Latitude 7480 and others to the DMI
  whitelist

  2. The sysfs exits, but backlight cannot be controlled by "brightness" attribute.
  The patch fixes the issue by updating timeout AC, if the model supports it:
  commit 9216e0dcb5533a999d544d0af8661118e0588e1d
  Author: Pali Rohár <pali.rohar@xxxxxxxxx>
  Date:   Sun Apr 23 21:40:47 2017 +0200

      platform/x86: dell-laptop: Add keyboard backlight timeout AC
  settings

  [Test Case]
  On Dell Precision 3250 (Kabylake generation), the backlight cannot be controlled in sysfs, because it does not exist.
  With these two patches, keyboard backlight can be controlled in "/sys/devices/platform/dell-laptop/leds/dell::kbd_backlight".

  [Regression Potential] 
  The regression potential is low. Only newer Dell laptops will be affected, and it only applies to limited models.

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