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

12 October 2012

The system could be made to crash under certain conditions.

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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)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 11.10

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

Related notices

  • USN-1607-1: linux, linux-image-3.0.0-26-powerpc, linux-image-3.0.0-26-powerpc-smp, linux-image-3.0.0-26-omap, linux-image-3.0.0-26-server, linux-image-3.0.0-26-virtual, linux-image-3.0.0-26-powerpc64-smp, linux-image-3.0.0-26-generic-pae, linux-image-3.0.0-26-generic
  • USN-1606-1: linux-image-2.6.32-44-versatile, linux, linux-image-2.6.32-44-powerpc64-smp, linux-image-2.6.32-44-ia64, linux-image-2.6.32-44-powerpc-smp, linux-image-2.6.32-44-sparc64, linux-image-2.6.32-44-sparc64-smp, linux-image-2.6.32-44-generic, linux-image-2.6.32-44-generic-pae, linux-image-2.6.32-44-virtual, linux-image-2.6.32-44-lpia, linux-image-2.6.32-44-preempt, linux-image-2.6.32-44-server, linux-image-2.6.32-44-386, linux-image-2.6.32-44-powerpc
  • USN-1594-1: linux-lts-backport-oneiric, linux-image-3.0.0-26-server, linux-image-3.0.0-26-virtual, linux-image-3.0.0-26-generic-pae, linux-image-3.0.0-26-generic
  • USN-1529-1: linux-image-3.2.0-29-highbank, linux-image-3.2.0-29-virtual, linux-image-3.2.0-29-powerpc64-smp, linux, linux-image-3.2.0-29-powerpc-smp, linux-image-3.2.0-29-omap, linux-image-3.2.0-29-generic, linux-image-3.2.0-29-generic-pae
  • USN-1514-1: linux-ti-omap4, linux-image-3.2.0-1417-omap4
  • USN-1653-1: linux-image-2.6.32-350-ec2, linux-ec2
  • USN-1651-1: linux-image-2.6.32-45-virtual, linux, linux-image-2.6.32-45-lpia, linux-image-2.6.32-45-server, linux-image-2.6.32-45-powerpc-smp, linux-image-2.6.32-45-sparc64, linux-image-2.6.32-45-generic-pae, linux-image-2.6.32-45-powerpc64-smp, linux-image-2.6.32-45-powerpc, linux-image-2.6.32-45-generic, linux-image-2.6.32-45-preempt, linux-image-2.6.32-45-sparc64-smp, linux-image-2.6.32-45-386, linux-image-2.6.32-45-versatile, linux-image-2.6.32-45-ia64
  • USN-1599-1: linux-image-3.2.0-1420-omap4, linux-ti-omap4
  • USN-1610-1: linux-image-3.2.0-32-generic, linux, linux-image-3.2.0-32-powerpc64-smp, linux-image-3.2.0-32-highbank, linux-image-3.2.0-32-omap, linux-image-3.2.0-32-powerpc-smp, linux-image-3.2.0-32-generic-pae, linux-image-3.2.0-32-virtual

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