USN-1341-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-1341-1

23rd January, 2012

linux vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 10.10

Summary

Several security issues were fixed in the kernel.

Software description

  • 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)

Dan Rosenberg reported an error in the old ABI compatibility layer of ARM
kernels. A local attacker could exploit this flaw to cause a denial of
service or gain root privileges. (CVE-2011-1759)

Ben Hutchings reported a flaw in the kernel's handling of corrupt LDM
partitions. A local user could exploit this to cause a denial of service or
escalate privileges. (CVE-2011-2182)

Clement Lecigne discovered a bug in the HFS filesystem. A local attacker
could exploit this to cause a kernel oops. (CVE-2011-2203)

A flaw was found in how the Linux kernel handles user-defined key types. An
unprivileged local user could exploit this to crash the system.
(CVE-2011-4110)

Update instructions

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

Ubuntu 10.10:
linux-image-2.6.35-32-powerpc64-smp 2.6.35-32.64
linux-image-2.6.35-32-generic-pae 2.6.35-32.64
linux-image-2.6.35-32-versatile 2.6.35-32.64
linux-image-2.6.35-32-generic 2.6.35-32.64
linux-image-2.6.35-32-virtual 2.6.35-32.64
linux-image-2.6.35-32-powerpc-smp 2.6.35-32.64
linux-image-2.6.35-32-powerpc 2.6.35-32.64
linux-image-2.6.35-32-server 2.6.35-32.64
linux-image-2.6.35-32-omap 2.6.35-32.64

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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-2011-1759, CVE-2011-2182, CVE-2011-2203, CVE-2011-4110