CVE-2011-2521 | Vulnerability Database | Aqua Security

The x86_assign_hw_event function in arch/x86/kernel/cpu/perf_event.c in the Performance Events subsystem in the Linux kernel before 2.6.39 does not properly calculate counter values, which allows local users to cause a denial of service (panic) via the perf program.

Affected Software

Name	Vendor	Start Version	End Version
Linux_kernel	Linux	*	2.6.39 (excluding)
Red Hat Enterprise Linux 6	RedHat	kernel-0:2.6.32-131.17.1.el6	*
Linux	Ubuntu	upstream	*
Linux-ec2	Ubuntu	maverick	*
Linux-ec2	Ubuntu	upstream	*
Linux-fsl-imx51	Ubuntu	upstream	*
Linux-lts-backport-maverick	Ubuntu	upstream	*
Linux-lts-backport-natty	Ubuntu	upstream	*
Linux-mvl-dove	Ubuntu	upstream	*
Linux-ti-omap4	Ubuntu	upstream	*

References

http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fc66c5210ec2539e800e87d7b3a985323c7be96e
http://www.openwall.com/lists/oss-security/2011/07/06/4
https://bugzilla.redhat.com/show_bug.cgi?id=719228
https://github.com/torvalds/linux/commit/fc66c5210ec2539e800e87d7b3a985323c7be96e
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fc66c5210ec2539e800e87d7b3a985323c7be96e
http://www.openwall.com/lists/oss-security/2011/07/06/4
https://bugzilla.redhat.com/show_bug.cgi?id=719228
https://github.com/torvalds/linux/commit/fc66c5210ec2539e800e87d7b3a985323c7be96e

NVD	https://nvd.nist.gov/vuln/detail/CVE-2011-2521
CWE	https://cwe.mitre.org/data/definitions/189.html