OpenAFS: Denial of Service

1. Gentoo Linux Security Advisory

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-fs/openafs	< 1.4.6	>= 1.4.6	All supported architectures

Related bugreports: #203573

A Denial of Service vulnerability has been discovered in OpenAFS.

2. Impact Information

OpenAFS is a distributed network filesystem.

Russ Allbery, Jeffrey Altman, Dan Hyde and Thomas Mueller discovered a race condition due to an improper handling of the clients callbacks lists.

A remote attacker could construct cases which trigger the race condition, resulting in a server crash.

3. Resolution Information

There is no known workaround at this time.

All OpenAFS users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-fs/openafs-1.4.6"

4. References

Page updated January 09, 2008

Summary: This is a Gentoo Linux Security Advisory

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