Denial of Service Vulnerability in Linux Kernel's Performance Events Subsystem

CVE-2011-2521 · MEDIUM Severity

AV:L/AC:L/AU:N/C:N/I:N/A:C

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.

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