USN-1568-1: Linux kernel vulnerabilities

14 September 2012

linux vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 11.10

Summary

Several security issues were fixed in the kernel.

Software Description

  • linux - Linux kernel

Details

Ben Hutchings reported a flaw in the Linux kernel with some network drivers that support TSO (TCP segment offload). A local or peer user could exploit this flaw to to cause a denial of service. (CVE-2012-3412)

Jay Fenlason and Doug Ledford discovered a bug in the Linux kernel implementation of RDS sockets. A local unprivileged user could potentially use this flaw to read privileged information from the kernel. (CVE-2012-3430)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 11.10
linux-image-3.0.0-26-generic - 3.0.0-26.42
linux-image-3.0.0-26-generic-pae - 3.0.0-26.42
linux-image-3.0.0-26-omap - 3.0.0-26.42
linux-image-3.0.0-26-powerpc - 3.0.0-26.42
linux-image-3.0.0-26-powerpc-smp - 3.0.0-26.42
linux-image-3.0.0-26-powerpc64-smp - 3.0.0-26.42
linux-image-3.0.0-26-server - 3.0.0-26.42
linux-image-3.0.0-26-virtual - 3.0.0-26.42

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to reboot your computer to make all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. If you use linux-restricted-modules, you have to update that package as well to get modules which work with the new kernel version. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-server, linux-powerpc), a standard system upgrade will automatically perform this as well.

References