The vmsplice system call did not properly verify address arguments passed by user space processes, which allowed local attackers to overwrite arbitrary kernel memory, gaining root privileges (CVE-2008-0010, CVE-2008-0600).
In the vserver-enabled kernels, a missing access check on certain symlinks in /proc enabled local attackers to access resources in other vservers (CVE-2008-0163).
The old stable distribution (sarge) is not affected by this problem.
For the stable distribution (etch), this problem has been fixed in version 2.6.18.dfsg.1-18etch1.
In addition to these fixes, this update also incorporates changes from the upcoming point release of the stable distribution.
Some architecture builds were not yet available at the time of DSA-1494-1. This update to DSA-1494 provides linux-2.6 packages for these remaining architectures, as well as additional binary packages that are built from source code provided by linux-2.6.
The unstable (sid) and testing (lenny) distributions will be fixed soon.
We recommend that you upgrade your linux-2.6, fai-kernels, and user-mode-linux packages.