CVE-2011-2521

Linux Kernel < 2.6.39 - Denial of Service via Performance Events Subsystem

Title source: llm

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.

References (5)

Core 5

Core References

Patch, Third Party Advisory x_refsource_confirm

https://github.com/torvalds/linux/commit/fc66c5210ec2539e800e87d7b3a985323c7be96e

Patch x_refsource_confirm

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fc66c5210ec2539e800e87d7b3a985323c7be96e

Broken Link x_refsource_confirm

http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39

Mailing List, Third Party Advisory mailing-list x_refsource_mlist

http://www.openwall.com/lists/oss-security/2011/07/06/4

Issue Tracking, Third Party Advisory x_refsource_confirm

https://bugzilla.redhat.com/show_bug.cgi?id=719228

Scores

EPSS 0.0039

EPSS Percentile 32.1%

Details

CWE

CWE-189

Status published

Products (1)

linux/linux_kernel < 2.6.39

Published May 24, 2012

Tracked Since Feb 18, 2026