Ubuntu Security Notices
USN-1844-1

USN-1844-1: Linux kernel vulnerability

Publication date

30 May 2013

Overview

The system could be made to crash or run programs as an administrator if it received specially crafted network traffic.

Releases

12.04

Packages

linux - Linux kernel

Details

Kees Cook discovered a flaw in the Linux kernel's iSCSI subsystem. A remote
unauthenticated attacker could exploit this flaw to cause a denial of
service (system crash) or potentially gain administrative privileges.

Update instructions

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

Learn more about how to get the fixes.

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.

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

Ubuntu Release	Package Version
12.04 precise	linux-image-3.2.0-45-generic – 3.2.0-45.70
	linux-image-3.2.0-45-powerpc-smp – 3.2.0-45.70
	linux-image-3.2.0-45-virtual – 3.2.0-45.70
	linux-image-3.2.0-45-highbank – 3.2.0-45.70
	linux-image-3.2.0-45-omap – 3.2.0-45.70
	linux-image-3.2.0-45-generic-pae – 3.2.0-45.70
	linux-image-3.2.0-45-powerpc64-smp – 3.2.0-45.70

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References

CVE-2013-2850

CVE-2013-2850

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