The system could be made to deny services if it received specially crafted local area network traffic.
Somnath Kotur discovered an error in the Linux kernel’s VLAN (virtual lan) and be2net drivers. An attacker on the local network could exploit this flaw to cause a denial of service. (CVE-2011-3347)
27 March 2012
A security issue affects these releases of Ubuntu and its derivatives:
The system could be made to deny services if it received specially crafted local area network traffic.
Somnath Kotur discovered an error in the Linux kernel’s VLAN (virtual lan) and be2net drivers. An attacker on the local network could exploit this flaw to cause a denial of service. (CVE-2011-3347)
A flaw was found in the Linux kernel’s ext4 file system when mounting a corrupt filesystem. A user-assisted remote attacker could exploit this flaw to cause a denial of service. (CVE-2012-2100)
The problem can be corrected by updating your system to the following package versions:
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.
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