CVE-2012-6647

Name	CVE-2012-6647
Description	The 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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	buster	4.19.249-2	fixed
	buster (security)	4.19.304-1	fixed
	bullseye	5.10.209-2	fixed
	bullseye (security)	5.10.216-1	fixed
	bookworm	6.1.76-1	fixed
	bookworm (security)	6.1.90-1	fixed
	sid, trixie	6.7.12-1	fixed

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

Package	Type	Release	Fixed Version
linux	source	(unstable)	3.2.29-1
linux-2.6	source	squeeze	2.6.32-47
linux-2.6	source	(unstable)	(unfixed)

Notes

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