USN-1275-1: Linux kernel vulnerability

21 November 2011

The system could be made to expose sensitive information locally.

Releases

Packages

Details

Peter Huewe discovered an information leak in the handling of reading
security-related TPM data. A local, unprivileged user could read the
results of a previous TPM command. (CVE-2011-1162)

Vasiliy Kulikov discovered that taskstats did not enforce access
restrictions. A local attacker could exploit this to read certain
information, leading to a loss of privacy. (CVE-2011-2494)

Mathieu Desnoyers discovered that the kernel sockets implementation
incorrectly dereferenced user pointers. A local attacker could possibly
exploit this to crash the system. (CVE-2011-4594)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 11.10

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

Related notices

  • USN-1243-1: linux-image-2.6.35-30-generic-pae, linux-image-2.6.35-30-generic, linux-image-2.6.35-30-powerpc64-smp, linux-image-2.6.35-30-omap, linux-image-2.6.35-30-versatile, linux, linux-image-2.6.35-30-powerpc, linux-image-2.6.35-30-virtual, linux-image-2.6.35-30-powerpc-smp, linux-image-2.6.35-30-server
  • USN-1241-1: linux-fsl-imx51, linux-image-2.6.31-611-imx51
  • USN-1244-1: linux-image-2.6.35-903-omap4, linux-ti-omap4
  • USN-1341-1: linux-image-2.6.35-32-omap, linux-image-2.6.35-32-powerpc, linux-image-2.6.35-32-server, linux-image-2.6.35-32-versatile, linux, linux-image-2.6.35-32-generic-pae, linux-image-2.6.35-32-powerpc64-smp, linux-image-2.6.35-32-powerpc-smp, linux-image-2.6.35-32-generic, linux-image-2.6.35-32-virtual
  • USN-1318-1: linux-image-2.6.31-612-imx51, linux-fsl-imx51
  • USN-1240-1: linux-mvl-dove, linux-image-2.6.32-219-dove
  • USN-1245-1: linux-mvl-dove, linux-image-2.6.32-419-dove
  • USN-1285-1: linux-image-2.6.38-13-generic-pae, linux-image-2.6.38-13-powerpc64-smp, linux-image-2.6.38-13-server, linux-image-2.6.38-13-versatile, linux, linux-image-2.6.38-13-generic, linux-image-2.6.38-13-powerpc, linux-image-2.6.38-13-powerpc-smp, linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-omap
  • USN-1325-1: linux-image-2.6.35-903-omap4, linux-ti-omap4
  • USN-1303-1: linux-mvl-dove, linux-image-2.6.32-421-dove
  • USN-1242-1: linux-image-2.6.35-30-generic-pae, linux-image-2.6.35-30-generic, linux-lts-backport-maverick, linux-image-2.6.35-30-virtual, linux-image-2.6.35-30-server
  • USN-1260-1: linux-image-3.0.0-1206-omap4, linux-ti-omap4
  • USN-1253-1: linux-image-2.6.32-35-powerpc, linux-image-2.6.32-35-lpia, linux-image-2.6.32-35-powerpc64-smp, linux-image-2.6.32-35-powerpc-smp, linux-image-2.6.32-35-generic, linux-image-2.6.32-35-preempt, linux-image-2.6.32-35-server, linux-image-2.6.32-35-sparc64-smp, linux-image-2.6.32-35-versatile, linux-image-2.6.32-35-virtual, linux, linux-image-2.6.32-35-ia64, linux-image-2.6.32-35-386, linux-image-2.6.32-35-generic-pae, linux-image-2.6.32-35-sparc64
  • USN-1345-1: linux-image-2.6.38-13-generic-pae, linux-image-2.6.38-13-powerpc64-smp, linux-image-2.6.38-13-server, linux-image-2.6.38-13-versatile, linux, linux-image-2.6.38-13-generic, linux-image-2.6.38-13-powerpc, linux-image-2.6.38-13-powerpc-smp, linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-omap
  • USN-1236-1: linux-image-2.6.24-29-mckinley, linux, linux-image-2.6.24-29-generic, linux-image-2.6.24-29-server, linux-image-2.6.24-29-hppa64, linux-image-2.6.24-29-386, linux-image-2.6.24-29-openvz, linux-image-2.6.24-29-powerpc-smp, linux-image-2.6.24-29-sparc64-smp, linux-image-2.6.24-29-sparc64, linux-image-2.6.24-29-powerpc64-smp, linux-image-2.6.24-29-lpiacompat, linux-image-2.6.24-29-rt, linux-image-2.6.24-29-itanium, linux-image-2.6.24-29-lpia, linux-image-2.6.24-29-hppa32, linux-image-2.6.24-29-virtual, linux-image-2.6.24-29-powerpc, linux-image-2.6.24-29-xen
  • USN-1281-1: linux-image-2.6.38-1209-omap4, linux-ti-omap4
  • USN-1337-1: linux-image-2.6.38-13-generic-pae, linux-image-2.6.38-13-server, linux-lts-backport-natty, linux-image-2.6.38-13-generic, linux-image-2.6.38-13-virtual
  • USN-1332-1: linux-image-2.6.35-32-server, linux-lts-backport-maverick, linux-image-2.6.35-32-generic-pae, linux-image-2.6.35-32-generic, linux-image-2.6.35-32-virtual
  • USN-1294-1: linux-lts-backport-oneiric, linux-image-3.0.0-13-virtual, linux-image-3.0.0-13-generic, linux-image-3.0.0-13-generic-pae, linux-image-3.0.0-13-server
  • USN-1319-1: linux-image-2.6.38-1209-omap4, linux-ti-omap4
  • USN-1323-1: linux-image-2.6.24-30-lpiacompat, linux, linux-image-2.6.24-30-generic, linux-image-2.6.24-30-sparc64-smp, linux-image-2.6.24-30-lpia, linux-image-2.6.24-30-openvz, linux-image-2.6.24-30-hppa32, linux-image-2.6.24-30-virtual, linux-image-2.6.24-30-powerpc, linux-image-2.6.24-30-itanium, linux-image-2.6.24-30-hppa64, linux-image-2.6.24-30-rt, linux-image-2.6.24-30-server, linux-image-2.6.24-30-powerpc-smp, linux-image-2.6.24-30-386, linux-image-2.6.24-30-mckinley, linux-image-2.6.24-30-xen, linux-image-2.6.24-30-sparc64, linux-image-2.6.24-30-powerpc64-smp
  • USN-1239-1: linux-ec2, linux-image-2.6.32-319-ec2
  • USN-1279-1: linux-image-2.6.38-13-generic-pae, linux-image-2.6.38-13-server, linux-lts-backport-natty, linux-image-2.6.38-13-generic, linux-image-2.6.38-13-virtual
  • USN-1299-1: linux-image-2.6.32-341-ec2, linux-ec2
  • USN-1311-1: linux-image-2.6.32-37-powerpc, linux-image-2.6.32-37-powerpc64-smp, linux-image-2.6.32-37-versatile, linux-image-2.6.32-37-server, linux-image-2.6.32-37-386, linux, linux-image-2.6.32-37-generic-pae, linux-image-2.6.32-37-lpia, linux-image-2.6.32-37-powerpc-smp, linux-image-2.6.32-37-sparc64, linux-image-2.6.32-37-preempt, linux-image-2.6.32-37-sparc64-smp, linux-image-2.6.32-37-virtual, linux-image-2.6.32-37-ia64, linux-image-2.6.32-37-generic