CVE-2012-6647

NameCVE-2012-6647
DescriptionThe futex_wait_requeue_pi function in kernel/futex.c in the Linux kernel before 3.5.1 does not ensure that calls have two different futex addresses, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted FUTEX_WAIT_REQUEUE_PI command.
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 (attack range: local)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)jessie3.16.56-1+deb8u1fixed
jessie (security)3.16.59-1fixed
stretch4.9.144-3fixed
stretch (security)4.9.110-3+deb9u6fixed
buster4.19.16-1fixed
sid4.19.28-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)3.2.29-1medium
linux-2.6source(unstable)(unfixed)medium
linux-2.6sourcesqueeze2.6.32-47medium

Notes

Upstream fix: https://git.kernel.org/linus/6f7b0a2a5c0fb03be7c25bd1745baa50582348ef
Introduced in https://git.kernel.org/linus/52400ba946759af28442dee6265c5c0180ac7122

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