USN-1337-1: Linux kernel (Natty backport) vulnerabilities

23 January 2012

linux-lts-backport-natty vulnerabilities

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

  • Ubuntu 10.04 LTS

Summary

Several security issues were fixed in the kernel.

Software Description

  • linux-lts-backport-natty - Linux kernel backport from Natty

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)

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 versions:

Ubuntu 10.04 LTS
linux-image-2.6.38-13-generic - 2.6.38-13.54~lucid1
linux-image-2.6.38-13-generic-pae - 2.6.38-13.54~lucid1
linux-image-2.6.38-13-server - 2.6.38-13.54~lucid1
linux-image-2.6.38-13-virtual - 2.6.38-13.54~lucid1

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.

References