1. Ubuntu Security Notices
  2. USN-1609-1

USN-1609-1: Linux kernel (OMAP4) vulnerability

Publication date

12 October 2012

Overview

The system could be made to crash under certain conditions.

Releases

Packages

Details

A flaw was found in how the Linux kernel’s KVM (Kernel-based Virtual
Machine) subsystem handled MSI (Message Signaled Interrupts). A local
unprivileged user could exploit this flaw to cause a denial of service or
potentially elevate privileges. (CVE-2012-2137)

Mathias Krause discover an error in Linux kernel’s Datagram Congestion
Control Protocol (DCCP) Congestion Control Identifier (CCID) use. A local
attack could exploit this flaw to cause a denial of service (crash) and
potentially escalate privileges if the user can mmap page 0.
(CVE-2013-1827)

A flaw was found in how the Linux kernel’s KVM (Kernel-based Virtual
Machine) subsystem handled MSI (Message Signaled Interrupts). A local
unprivileged user could exploit this flaw to cause a denial of service or
potentially elevate privileges. (CVE-2012-2137)

Mathias Krause discover an error in Linux kernel’s Datagram Congestion
Control Protocol (DCCP) Congestion Control Identifier (CCID) use. A local
attack could exploit this flaw to cause a denial of service (crash) and
potentially escalate privileges if the user can mmap page 0.
(CVE-2013-1827)

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.

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

Ubuntu Release Package Version
11.10 oneiric linux-image-3.0.0-1216-omap4 –  3.0.0-1216.29

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References

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