USN-1361-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-1361-1

13th February, 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

Han-Wen Nienhuys reported a flaw in the FUSE kernel module. A local user
who can mount a FUSE file system could cause a denial of service.
(CVE-2011-3353)

A flaw was found in KVM's Programmable Interval Timer (PIT). When a virtual
interrupt control is not available a local user could use this to cause a
denial of service by starting a timer. (CVE-2011-4622)

A flaw was discovered in the XFS filesystem. If a local user mounts a
specially crafted XFS image it could potential execute arbitrary code on
the system. (CVE-2012-0038)

Chen Haogang discovered an integer overflow that could result in memory
corruption. A local unprivileged user could use this to crash the system.
(CVE-2012-0044)

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 2.6.35-32.65
linux-image-2.6.35-32-generic-pae 2.6.35-32.65
linux-image-2.6.35-32-versatile 2.6.35-32.65
linux-image-2.6.35-32-generic 2.6.35-32.65
linux-image-2.6.35-32-virtual 2.6.35-32.65
linux-image-2.6.35-32-powerpc-smp 2.6.35-32.65
linux-image-2.6.35-32-powerpc 2.6.35-32.65
linux-image-2.6.35-32-server 2.6.35-32.65
linux-image-2.6.35-32-omap 2.6.35-32.65

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-2011-3353, CVE-2011-4622, CVE-2012-0038, CVE-2012-0044