linux vulnerabilities

24 January 2012

linux vulnerabilities

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

• Ubuntu 11.04

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)

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 11.04

linux-image-2.6.38-13-generic - 2.6.38-13.54

linux-image-2.6.38-13-generic-pae - 2.6.38-13.54

linux-image-2.6.38-13-omap - 2.6.38-13.54

linux-image-2.6.38-13-powerpc - 2.6.38-13.54

linux-image-2.6.38-13-powerpc-smp - 2.6.38-13.54

linux-image-2.6.38-13-powerpc64-smp - 2.6.38-13.54

linux-image-2.6.38-13-server - 2.6.38-13.54

linux-image-2.6.38-13-versatile - 2.6.38-13.54

linux-image-2.6.38-13-virtual - 2.6.38-13.54

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

• CVE-2011-1162
• CVE-2011-2203
• CVE-2011-4110