USN-1743-1: Linux kernel (Quantal HWE) vulnerability

22 February 2013

linux-lts-quantal vulnerability

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

  • Ubuntu 12.04 LTS

Summary

The system could be made to run programs as an administrator.

Software Description

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

Details

Suleiman Souhlal, Salman Qazi, Aaron Durbin and Michael Davidson discovered a race condition in the Linux kernel’s ptrace syscall. An unprivileged local attacker could exploit this flaw to run programs as an administrator. (CVE-2013-0871)

A flaw was discovered in the Edgeort USB serial converter driver when the device is disconnected while it is in use. A local user could exploit this flaw to cause a denial of service (system crash). (CVE-2013-1774)

A flaw was discovered in the ChipIdea Highspeed Dual Role and ChipIdea host controller drivers in the Linux kernel. A local user could use this flaw to cause a denial of service (system crash). (CVE-2013-2058)

Update instructions

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

Ubuntu 12.04 LTS
linux-image-3.5.0-25-generic - 3.5.0-25.38~precise1

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