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.
Date published : 2012-05-24
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39