CVE-2011-2521

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.

• CWE-189

• http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39Broken Link
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fc66c5210ec2539e800e87d7b3a985323c7be96e
• http://www.openwall.com/lists/oss-security/2011/07/06/4Mailing List, Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=719228Issue Tracking, Third Party Advisory
• https://github.com/torvalds/linux/commit/fc66c5210ec2539e800e87d7b3a985323c7be96ePatch, Third Party Advisory
• http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39Broken Link
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fc66c5210ec2539e800e87d7b3a985323c7be96e
• http://www.openwall.com/lists/oss-security/2011/07/06/4Mailing List, Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=719228Issue Tracking, Third Party Advisory
• https://github.com/torvalds/linux/commit/fc66c5210ec2539e800e87d7b3a985323c7be96ePatch, Third Party Advisory

Published

May 24, 2012

Last Modified

Jun 16, 2026

Status

Modified

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