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CVE
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CVE-2011-2521

Date: (C)2012-05-24   (M)2016-03-13
 
CVSS Score: 4.9Access Vector: LOCAL
Exploitability Subscore: 3.9Access Complexity: LOW
Impact Subscore: 6.9Authentication: NONE
 Confidentiality: NONE
 Integrity: NONE
 Availability: COMPLETE











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.

Reference:
http://www.openwall.com/lists/oss-security/2011/07/06/4
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
https://bugzilla.redhat.com/show_bug.cgi?id=719228
https://github.com/torvalds/linux/commit/fc66c5210ec2539e800e87d7b3a985323c7be96e

CPE    836
cpe:/o:linux:linux_kernel:2.3.99:pre8
cpe:/o:linux:linux_kernel:2.3.99:pre9
cpe:/o:linux:linux_kernel:2.4.35
cpe:/o:linux:linux_kernel:2.2.13:pre15
...
CWE    1
CWE-189
OVAL    2
oval:org.secpod.oval:def:500184
oval:org.secpod.oval:def:1500321

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