kernel, perf, python security update

ID CESA-2013:0830
Type centos
Reporter CentOS Project
Modified 2013-05-17T00:36:04


CentOS Errata and Security Advisory CESA-2013:0830

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

This update fixes the following security issue:

  • It was found that the Red Hat Enterprise Linux 6.1 kernel update (RHSA-2011:0542) introduced an integer conversion issue in the Linux kernel's Performance Events implementation. This led to a user-supplied index into the perf_swevent_enabled array not being validated properly, resulting in out-of-bounds kernel memory access. A local, unprivileged user could use this flaw to escalate their privileges. (CVE-2013-2094, Important)

A public exploit that affects Red Hat Enterprise Linux 6 is available.

Refer to Red Hat Knowledge Solution 373743, linked to in the References, for further information and mitigation instructions for users who are unable to immediately apply this update.

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

Merged security bulletin from advisories:

Affected packages: kernel kernel-debug kernel-debug-devel kernel-devel kernel-doc kernel-firmware kernel-headers perf python-perf

Upstream details at: