CVE-2009-3623

NameCVE-2009-3623
DescriptionThe lookup_cb_cred function in fs/nfsd/nfs4callback.c in the nfsd4 subsystem in the Linux kernel before 2.6.31.2 attempts to access a credentials cache even when a client specifies the AUTH_NULL authentication flavor, which allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) via an NFSv4 mount request.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linux-2.6sourceetch(not affected)
linux-2.6sourcelenny(not affected)
linux-2.6source(unstable)2.6.31-1medium
linux-2.6.24source(unstable)(not affected)

Notes

[etch] - linux-2.6 <not-affected> (vulnerable code introduced in 2.6.31)
[lenny] - linux-2.6 <not-affected> (vulnerable code introduced in 2.6.31)
- linux-2.6.24 <not-affected> (vulnerable code introduced in 2.6.31)
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