Debian Security Advisory DSA 2632-1 (linux-2.6 - Privilege Escalation/denial Of Service) Network Vulnerability

Summary

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.

Solution

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-linux2.6.32-1um-4+48squeeze1 We recommend that you upgrade your linux-2.6 and user-mode-linux packages.

Insight

The Linux kernel is the core of the Linux operating system.

Affected

linux-2.6 on Debian Linux

Detection

This check tests the installed software version using the apt package manager.

References