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Ubuntu: New Linux packages fix security vulnerabilities

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. 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. 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.

Chen Haogang discovered an integer overflow that could result in memory corruption. A local unprivileged user could use this to crash the system.

Updated packages are available from security.ubuntu.com.

==========================================================================
Ubuntu Security Notice USN-1361-1
February 13, 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 versions:

Ubuntu 10.10:
 linux-image-2.6.35-32-generic   2.6.35-32.65
 linux-image-2.6.35-32-generic-pae  2.6.35-32.65
 linux-image-2.6.35-32-omap      2.6.35-32.65
 linux-image-2.6.35-32-powerpc   2.6.35-32.65
 linux-image-2.6.35-32-powerpc-smp  2.6.35-32.65
 linux-image-2.6.35-32-powerpc64-smp  2.6.35-32.65
 linux-image-2.6.35-32-server    2.6.35-32.65
 linux-image-2.6.35-32-versatile  2.6.35-32.65
 linux-image-2.6.35-32-virtual   2.6.35-32.65

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
 http://www.ubuntu.com/usn/usn-1361-1
 CVE-2011-3353, CVE-2011-4622, CVE-2012-0038, CVE-2012-0044

Package Information:
 https://launchpad.net/ubuntu/+source/linux/2.6.35-32.65