CVE-2009-3624

NameCVE-2009-3624
DescriptionThe get_instantiation_keyring function in security/keys/keyctl.c in the KEYS subsystem in the Linux kernel before 2.6.32-rc5 does not properly maintain the reference count of a keyring, which allows local users to gain privileges or cause a denial of service (OOPS) via vectors involving calls to this function without specifying a keyring by ID, as demonstrated by a series of keyctl request2 and keyctl list commands.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

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)2.6.31-2low
linux-2.6.24source(unstable)(not affected)

Notes

[etch] - linux-2.6 <not-affected> (vulnerable code introduced in 2.6.29)
[lenny] - linux-2.6 <not-affected> (vulnerable code introduced in 2.6.29)
- linux-2.6.24 <not-affected> (vulnerable code introduced in 2.6.29)
fixed upstream in 2.6.32-rc5

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