USN-1332-1: Linux kernel (Maverick backport) vulnerabilities
13 January 2012
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 10.04 LTS
Several security issues were fixed in the kernel.
- linux-lts-backport-maverick - Linux kernel backport from Maverick
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)
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 10.04 LTS
- linux-image-2.6.35-32-generic - 2.6.35-32.64~lucid1
- linux-image-2.6.35-32-generic-pae - 2.6.35-32.64~lucid1
- linux-image-2.6.35-32-server - 2.6.35-32.64~lucid1
- linux-image-2.6.35-32-virtual - 2.6.35-32.64~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.
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.