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USN-1380-1: Linux kernel vulnerabilities

29 February 2012

Several security issues were fixed in the kernel.

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Releases

Packages

Details

A flaw was discovered in the TOMOYO LSM's handling of mount system calls.
An unprivileged user could oops the system causing a denial of service.
(CVE-2011-2518)

A bug was discovered in the Linux kernel's calculation of OOM (Out of
memory) scores, that would result in the wrong process being killed. A user
could use this to kill the process with the highest OOM score, even if that
process belongs to another user or the system. (CVE-2011-4097)

A flaw was found in the linux kernels IPv4 IGMP query processing. A remote
attacker could exploit this to cause a denial of service. (CVE-2012-0207)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 11.04

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

Related notices

  • USN-1383-1: linux-image-2.6.38-1209-omap4, linux-ti-omap4
  • USN-1386-1: linux-image-2.6.38-13-generic-pae, linux-lts-backport-natty, linux-image-2.6.38-13-generic, linux-image-2.6.38-13-server, linux-image-2.6.38-13-virtual
  • USN-1364-1: linux-image-3.0.0-1207-omap4, linux-ti-omap4
  • USN-1384-1: linux-image-3.0.0-16-server, linux-image-3.0.0-16-generic, linux-image-3.0.0-16-generic-pae, linux-lts-backport-oneiric, linux-image-3.0.0-16-virtual
  • USN-1363-1: linux-image-3.0.0-16-server, linux-image-3.0.0-16-powerpc-smp, linux, linux-image-3.0.0-16-generic, linux-image-3.0.0-16-generic-pae, linux-image-3.0.0-16-powerpc64-smp, linux-image-3.0.0-16-powerpc, linux-image-3.0.0-16-virtual, linux-image-3.0.0-16-omap
  • USN-1356-1: linux-image-2.6.38-1209-omap4, linux-ti-omap4