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USN-819-1: Linux kernel vulnerability

19 August 2009

Linux kernel vulnerability

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

Releases

Packages

Details

Tavis Ormandy and Julien Tinnes discovered that Linux did not correctly
initialize certain socket operation function pointers. A local attacker
could exploit this to gain root privileges. By default, Ubuntu 8.04
and later with a non-zero /proc/sys/vm/mmap_min_addr setting were not
vulnerable.

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 9.04
Ubuntu 8.10
Ubuntu 8.04
Ubuntu 6.06

After a standard system upgrade you need to reboot your computer to
effect the necessary changes.

References