Debian DSA-2632-1 : linux-2.6 - privilege escalation/denial of service

medium Nessus Plugin ID 64881


The remote Debian host is missing a security-related update.


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.


Upgrade the linux-2.6 and user-mode-linux packages.

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

See Also

Plugin Details

Severity: Medium

ID: 64881

File Name: debian_DSA-2632.nasl

Version: 1.12

Type: local

Agent: unix

Published: 2/26/2013

Updated: 1/11/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information


Risk Factor: High

Score: 7.4


Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.7

Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

Temporal Vector: E:F/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:linux-2.6, cpe:/o:debian:debian_linux:6.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/25/2013

Exploitable With


Reference Information

CVE: CVE-2013-0231, CVE-2013-0871

BID: 57740, 57986

DSA: 2632