Unrated severityNVD Advisory· Published May 24, 2012· Updated Jun 16, 2026

CVE-2011-2521

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Linux/Kernel2 versions
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: <2.6.39
- (no CPE)range: <2.6.39

Patches

Vulnerability mechanics

References

github.com/torvalds/linux/commit/fc66c5210ec2539e800e87d7b3a985323c7be96envdPatchThird Party Advisory
www.openwall.com/lists/oss-security/2011/07/06/4nvdMailing ListThird Party Advisory
bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39nvdBroken Link
git.kernel.orgnvd

News mentions

No linked articles in our index yet.

cvss	0.000
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000