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

medium Nessus Plugin ID 64881
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


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

Dependencies: ssh_get_info.nasl

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