(RHSA-2013:0741) Important: kernel security and bug fix update

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

This update fixes the following security issues:

• A race condition was found in the way the Linux kernel’s ptrace
  implementation handled PTRACE_SETREGS requests when the debuggee was woken
  due to a SIGKILL signal instead of being stopped. A local, unprivileged
  user could use this flaw to escalate their privileges. (CVE-2013-0871,
  Important)

• A use-after-free flaw was found in the Linux kernel’s memory management
  subsystem in the way quota handling for huge pages was performed. A local,
  unprivileged user could use this flaw to cause a denial of service or,
  potentially, escalate their privileges. (CVE-2012-2133, Moderate)

Red Hat would like to thank Shachar Raindel for reporting CVE-2012-2133.

This update also fixes several bugs. Documentation for these changes will
be available shortly from the Technical Notes document linked to in the
References section.

Users should upgrade to these updated packages, which contain backported
patches to correct these issues. The system must be rebooted for this
update to take effect.