USN-1597-1: Linux kernel (EC2) vulnerability
5 October 2012
linux-ec2 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 10.04 LTS
Summary
The system could be made to crash under certain conditions.
Software Description
- linux-ec2 - Linux kernel for EC2
Details
A flaw was found in how the Linux kernel passed the replacement session keyring to a child process. An unprivileged local user could exploit this flaw to cause a denial of service (panic).
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 10.04 LTS
- linux-image-2.6.32-349-ec2 - 2.6.32-349.55
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.