linux-2.6 - denial of service

A vulnerability has been discovered in the Linux kernel that may lead
to a denial of service. The Common Vulnerabilities and Exposures
project identifies the following problem:

• CVE-2008-1669
  Alexander Viro discovered a race condition in the fcntl code that
  may permit local users on multi-processor systems to execute parallel
  code paths that are otherwise prohibited and gain re-ordered access
  to the descriptor table.

For the stable distribution (etch), this problem has been fixed in version
2.6.18.dfsg.1-18etch4.

For the unstable distribution (sid), this problem has been fixed in version
2.6.25-2.

We recommend that you upgrade your linux-2.6, fai-kernels, and
user-mode-linux packages.