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Debian Security Advisory 2632-1

Debian Security Advisory 2632-1
Posted Feb 26, 2013
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2632-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or privilege escalation.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2013-0231, CVE-2013-0871
MD5 | 6cb530228f6616366bf467ed87a04a1c

Debian Security Advisory 2632-1

Change Mirror Download
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- ----------------------------------------------------------------------
Debian Security Advisory DSA-2632-1 security@debian.org
http://www.debian.org/security/ Dann Frazier
February 25, 2013 http://www.debian.org/security/faq
- ----------------------------------------------------------------------

Package : linux-2.6
Vulnerability : privilege escalation/denial of service
Problem type : local
Debian-specific: no
CVE Id(s) : CVE-2013-0231 CVE-2013-0871

Several vulnerabilities have been discovered in the Linux kernel that may lead
to a denial of service or privilege escalation. The Common Vulnerabilities and
Exposures project identifies the following problems:

CVE-2013-0231

Jan Beulich provided a fix for an issue in the Xen PCI backend drivers.
Users of guests on a system using passed-through PCI devices can create
a denial of service of the host system due to the use of non-ratelimited
kernel log messages.

CVE-2013-0871

Suleiman Souhlal and Salman Qazi of Google, with help from Aaron Durbin
and Michael Davidson of Google, discovered an issue in the
ptrace subsystem. Due to a race condition with PTRACE_SETREGS, local users
can cause kernel stack corruption and execution of arbitrary code.

For the stable distribution (squeeze), this problem has been fixed in version
2.6.32-48squeeze1.

The following matrix lists additional source packages that were rebuilt for
compatibility with or to take advantage of this update:

Debian 6.0 (squeeze)
user-mode-linux 2.6.32-1um-4+48squeeze1

We recommend that you upgrade your linux-2.6 and user-mode-linux packages.

Thanks to Micah Anderson for proof reading this text.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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