fai-kernels linux-2.6 user-mode-linux - several vulnerabilities

Several vulnerabilities have been discovered in the Linux kernel that may
lead to a denial of service. The Common Vulnerabilities and Exposures
project identifies the following problems:

• CVE-2007-6712
  Johannes Bauer discovered an integer overflow condition in the hrtimer
  subsystem on 64-bit systems. This can be exploited by local users to
  trigger a denial of service (DoS) by causing the kernel to execute an
  infinite loop.
• CVE-2008-1615
  Jan Kratochvil reported a local denial of service condition that
  permits local users on systems running the amd64 flavor kernel
  to cause a system crash.
• CVE-2008-2136
  Paul Harks discovered a memory leak in the Simple Internet Transition
  (SIT) code used for IPv6 over IPv4 tunnels. This can be exploited
  by remote users to cause a denial of service condition.
• CVE-2008-2137
  David Miller and Jan Lieskovsky discovered issues with the virtual
  address range checking of mmaped regions on the sparc architecture
  that may be exploited by local users to cause a denial of service.

For the stable distribution (etch), this problem has been fixed in version
2.6.18.dfsg.1-18etch5.

Builds for linux-2.6/s390 and fai-kernels/powerpc were not yet available at
the time of this advisory. This advisory will be updated as these builds
become available.

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