1. Ubuntu Security Notices
  2. USN-1489-1

USN-1489-1: Linux kernel (Oneiric backport) vulnerability

Publication date

29 June 2012

Overview

The system could be made to crash if it received specially crafted network traffic.

Releases

Packages

Details

A flaw was discovered in the Linux kernel's NFSv4 (Network file system)
handling of ACLs (access control lists). A remote NFS server (attacker)
could cause a denial of service (OOPS).

A flaw was discovered in the Linux kernel's NFSv4 (Network file system)
handling of ACLs (access control lists). A remote NFS server (attacker)
could cause a denial of service (OOPS).

Update instructions

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

Learn more about how to get the fixes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. If you use linux-restricted-modules, you have to update that package as well to get modules which work with the new kernel version. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-server, linux-powerpc), a standard system upgrade will automatically perform this as well.

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

Ubuntu Release Package Version
10.04 lucid linux-image-3.0.0-22-virtual –  3.0.0-22.36~lucid1
linux-image-3.0.0-22-generic-pae –  3.0.0-22.36~lucid1
linux-image-3.0.0-22-server –  3.0.0-22.36~lucid1
linux-image-3.0.0-22-generic –  3.0.0-22.36~lucid1

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.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›