Several security vulnerabilities were discovered in the Linux kernel, that may lead to a denial of service or privilege escalation.
These are the kernel vulnerabilities found recently in the Linux kernel packages: CVE-2011-2183, CVE-2011-2213, CVE-2011-2898, CVE-2011-3353, CVE-2011-4077, CVE-2011-4110, CVE-2011-4127, CVE-2011-4611, CVE-2011-4622, and CVE-2011-4914.
As usual, you can click on each one to see how it affects your Debian 6.0 system, or go here for an in-depth description. The security flaws can be fixed if you upgrade your system(s) to the 2.6.32-1um-4+39squeeze1 package.
It it recommended that you upgrade your linux-2.6 kernel and user-mode-linux packages, and perform a system restart. Updates for issues impacting the oldstable distribution (Lenny) are not yet available, but they will be provided soon.
Debian is a free Linux distribution that has a set of basic programs and utilities, over 29,000 packages, and precompiled software bundled, which can run on virtually any machine.
Ten Linux Kernel Vulnerabilities Patched for Debian 6.0