RHEL 6 : kernel (RHSA-2013:0741)

This script is Copyright (C) 2013-2014 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

Updated kernel packages that fix two security issues and several bugs
are now available for Red Hat Enterprise Linux 6.2 Extended Update
Support.

The Red Hat Security Response Team has rated this update as having
important security impact. Common Vulnerability Scoring System (CVSS)
base scores, which give detailed severity ratings, are available for
each vulnerability from the CVE links in the References section.

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.

See also :

https://www.redhat.com/security/data/cve/CVE-2012-2133.html
https://www.redhat.com/security/data/cve/CVE-2013-0871.html
http://www.nessus.org/u?64c6b598
http://rhn.redhat.com/errata/RHSA-2013-0741.html
http://www.nessus.org/u?c6b506c4

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 6.9
(CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 65990 ()

Bugtraq ID:

CVE ID: CVE-2012-2133
CVE-2013-0871