kernel-packages team mailing list archive

[Axel Beckert <abe@xxxxxxxxxx>]

This also affects monitoring tools like e.g. the libs test in hobbit-
plugins which compare the running kernel version to the one on disk.
These tests don't run as root as they don't need to. Now they need
elevated privileges just do this check... :-/

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https://bugs.launchpad.net/bugs/759725

Title:
  The kernel is no longer readable by non-root users

Status in “linux” package in Ubuntu:
  Won't Fix

Bug description:
  The mode of the latest kernel has changed so it is no longer readable
  by non-root users:

  -rw-r--r-- 1 root root 4336016 2010-10-17 01:37 /boot/vmlinuz-2.6.35-22-generic
  -rw-r--r-- 1 root root 4336912 2010-11-24 12:46 /boot/vmlinuz-2.6.35-23-generic
  -rw-r--r-- 1 root root 4523072 2011-03-08 18:47 /boot/vmlinuz-2.6.38-6-generic
  -rw------- 1 root root 4523936 2011-04-11 05:24 /boot/vmlinuz-2.6.38-8-generic

  This prevents people from using this kernel to boot qemu
  virtual machines as non-root.

  Please change the mode back to make the kernel readable.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: linux-image-2.6.38-8-generic 2.6.38-8.42
  Regression: Yes
  Reproducible: Yes
  ProcVersionSignature: Ubuntu 2.6.35-22.35-generic 2.6.35.4
  Uname: Linux 2.6.35-22-generic x86_64
  AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory
  AplayDevices: aplay: device_list:240: no soundcards found...
  Architecture: amd64
  ArecordDevices: arecord: device_list:240: no soundcards found...
  CRDA: Error: [Errno 2] No such file or directory
  Date: Wed Apr 13 13:05:01 2011
  HibernationDevice: RESUME=UUID=112bf9c4-620e-441f-abb3-aeac6aa15294
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
  Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: Red Hat KVM
  PciMultimedia:
   
  ProcEnviron:
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=1efa0b67-17df-484e-980c-8544fa2149fe ro quiet splash
  RelatedPackageVersions:
   linux-restricted-modules-2.6.35-22-generic N/A
   linux-backports-modules-2.6.35-22-generic  N/A
   linux-firmware                             1.50
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/01/2007
  dmi.bios.vendor: Seabios
  dmi.bios.version: 0.5.1
  dmi.chassis.type: 1
  dmi.chassis.vendor: Red Hat
  dmi.modalias: dmi:bvnSeabios:bvr0.5.1:bd01/01/2007:svnRedHat:pnKVM:pvrRHEL6.0.0PC:cvnRedHat:ct1:cvr:
  dmi.product.name: KVM
  dmi.product.version: RHEL 6.0.0 PC
  dmi.sys.vendor: Red Hat

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