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Debian 4.0 DSA-1494-2 Critical: Vmsplice Local Access Threat

debian
Calendar Grey February 13, 2008
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Urgent security notice for Debian regarding escalation of privileges stemming from vulnerabilities in vmsplice, granting local adversaries elevated access.
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 roo...

Summary


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 old stable distribution (sarge) is not affected by this problem.

The unstable (sid) and testing distributions will be fixed soon.

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

Upgrade instructions
- --------------------wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
will update the internal...

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