USN-1828-1: Linux kernel (Quantal HWE) vulnerability

Releases

• Ubuntu 12.04

Packages

• linux-lts-quantal - Linux hardware enablement kernel from Quantal

Details

An flaw was discovered in the Linux kernel's perf_events interface. A local
user could exploit this flaw to escalate privileges on the system.

Update instructions

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

Ubuntu 12.04

• linux-image-3.5.0-30-generic - 3.5.0-30.51~precise1

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

• CVE-2013-2094

Related notices

• USN-1839-1
• USN-1836-1
• USN-1826-1
• USN-1838-1
• USN-1825-1
• USN-1849-1
• USN-1827-1