USN-1275-1: Linux kernel vulnerability

Releases

• Ubuntu 11.10

Packages

• linux - Linux kernel

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

• linux-image-3.0.0-13-powerpc - 3.0.0-13.22
• linux-image-3.0.0-13-omap - 3.0.0-13.22
• linux-image-3.0.0-13-generic-pae - 3.0.0-13.22
• linux-image-3.0.0-13-powerpc64-smp - 3.0.0-13.22
• linux-image-3.0.0-13-server - 3.0.0-13.22
• linux-image-3.0.0-13-generic - 3.0.0-13.22
• linux-image-3.0.0-13-virtual - 3.0.0-13.22
• linux-image-3.0.0-13-powerpc-smp - 3.0.0-13.22

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.

References

• CVE-2011-1162
• CVE-2011-2494
• CVE-2011-4594

Related notices

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