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CVE-2011-2521

Date: May 24, 2012

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.

Language: C

Severity Score

Related Resources (8)

https://nvd.nist.gov/vuln/detail/CVE-2011-2521
http://www.openwall.com/lists/oss-security/2011/07/06/4
https://github.com/torvalds/linux/commit/fc66c5210ec2539e800e87d7b3a985323c7be96e
https://bugzilla.redhat.com/show_bug.cgi?id=719228
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
https://access.redhat.com/security/cve/CVE-2011-2521
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fc66c5210ec2539e800e87d7b3a985323c7be96e
https://www.mend.io/vulnerability-database/CVE-2011-2521

Severity Score

Weakness Type (CWE)

Numeric Errors

CWE-189

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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