USN-1387-1: Linux kernel (Maverick backport) vulnerabilities

6 March 2012

linux-lts-backport-maverick 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-maverick - Linux kernel backport from Maverick

Details

Aristide Fattori and Roberto Paleari reported a flaw in the Linux kernel’s handling of IPv4 icmp packets. A remote user could exploit this to cause a denial of service. (CVE-2011-1927)

A flaw was found in the Linux Ethernet bridge’s handling of IGMP (Internet Group Management Protocol) packets. An unprivileged local user could exploit this flaw to crash the system. (CVE-2011-0716)

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 discovered in the Linux kernel’s AppArmor security interface when invalid information was written to it. An unprivileged local user could use this to cause a denial of service on the system. (CVE-2011-3619)

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 10.04 LTS
linux-image-2.6.35-32-generic - 2.6.35-32.66~lucid1
linux-image-2.6.35-32-generic-pae - 2.6.35-32.66~lucid1
linux-image-2.6.35-32-server - 2.6.35-32.66~lucid1
linux-image-2.6.35-32-virtual - 2.6.35-32.66~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