CVE-2009-4027

NameCVE-2009-4027
DescriptionRace condition in the mac80211 subsystem in the Linux kernel before 2.6.32-rc8-next-20091201 allows remote attackers to cause a denial of service (system crash) via a Delete Block ACK (aka DELBA) packet that triggers a certain state change in the absence of an aggregation session.
SourceCVE (at NVD; oss-sec, fulldisc, OSVDB, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, more)
ReferencesDSA-1996-1, DTSA-204-1
NVD severityhigh (attack range: remote)
Debian/oldoldstablenot vulnerable.
Debian/oldstablenot known to be vulnerable.
Debian/stablenot known to be vulnerable.
Debian/testingnot known to be vulnerable.
Debian/unstablenot known to be vulnerable.

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux-2.6 (PTS)squeeze, squeeze (security)2.6.32-48squeeze6fixed
squeeze (lts)2.6.32-48squeeze13fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linux-2.6source(unstable)2.6.32-1medium
linux-2.6sourceetch(not affected)
linux-2.6sourcelenny2.6.26-21lenny3highDSA-1996-1
linux-2.6sourcesqueeze2.6.30-8squeeze1highDTSA-204-1
linux-2.6.24source(unstable)(not affected)

Notes

[etch] - linux-2.6 <not-affected> (introduced in 2.6.26)
- linux-2.6.24 <not-affected> (introduced in 2.6.26)

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