CVE-2011-2521

MEDIUM

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

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;a=commit;h=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

Details

Source: MITRE

Published: 2012-05-24

Updated: 2012-05-25

Type: CWE-189

Risk Information

CVSS v2.0

Base Score: 4.9

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM