kernel is vulnerable to denial of service. A flaw was found in the way the Linux kernel’s Performance Events implementation handled PERF_COUNT_SW_CPU_CLOCK counter overflow. A local, unprivileged user could use this flaw to cause a denial of service.
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a8b0ca17b80e92faab46ee7179ba9e99ccb61233
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a8b0ca17b80e92faab46ee7179ba9e99ccb61233
www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1
www.openwall.com/lists/oss-security/2011/08/16/1
access.redhat.com/errata/RHSA-2011:1350
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=730706
docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/6.1_Technical_Notes/kernel.html#RHSA-2011-1350
github.com/torvalds/linux/commit/a8b0ca17b80e92faab46ee7179ba9e99ccb61233
rhn.redhat.com/errata/RHSA-2011-1241.html