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USN-1594-1: Linux kernel (Oneiric backport) vulnerabilities

3 October 2012

Several security issues were fixed in the kernel.

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Releases

Packages

Details

Vadim Ponomarev discovered a flaw in the Linux kernel causing a reference
leak when PID namespaces are used. A remote attacker could exploit this
flaw causing a denial of service. (CVE-2012-2127)

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 10.04

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

Related notices

  • USN-1607-1: linux-image-3.0.0-26-powerpc-smp, linux-image-3.0.0-26-generic, linux, linux-image-3.0.0-26-powerpc64-smp, linux-image-3.0.0-26-powerpc, linux-image-3.0.0-26-generic-pae, linux-image-3.0.0-26-server, linux-image-3.0.0-26-omap, linux-image-3.0.0-26-virtual
  • USN-1606-1: linux-image-2.6.32-44-386, linux-image-2.6.32-44-powerpc-smp, linux-image-2.6.32-44-sparc64, linux-image-2.6.32-44-ia64, linux-image-2.6.32-44-server, linux, linux-image-2.6.32-44-sparc64-smp, linux-image-2.6.32-44-virtual, linux-image-2.6.32-44-generic-pae, linux-image-2.6.32-44-versatile, linux-image-2.6.32-44-generic, linux-image-2.6.32-44-lpia, linux-image-2.6.32-44-powerpc, linux-image-2.6.32-44-powerpc64-smp, linux-image-2.6.32-44-preempt
  • USN-1529-1: linux-image-3.2.0-29-omap, linux-image-3.2.0-29-powerpc-smp, linux-image-3.2.0-29-powerpc64-smp, linux, linux-image-3.2.0-29-highbank, linux-image-3.2.0-29-virtual, 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-1609-1: linux-ti-omap4, linux-image-3.0.0-1216-omap4
  • USN-1653-1: linux-image-2.6.32-350-ec2, linux-ec2
  • USN-1651-1: linux-image-2.6.32-45-server, linux-image-2.6.32-45-versatile, linux-image-2.6.32-45-virtual, linux, linux-image-2.6.32-45-powerpc, linux-image-2.6.32-45-ia64, linux-image-2.6.32-45-powerpc-smp, linux-image-2.6.32-45-generic-pae, linux-image-2.6.32-45-386, linux-image-2.6.32-45-powerpc64-smp, linux-image-2.6.32-45-preempt, linux-image-2.6.32-45-sparc64, linux-image-2.6.32-45-sparc64-smp, linux-image-2.6.32-45-lpia, linux-image-2.6.32-45-generic
  • USN-1599-1: linux-ti-omap4, linux-image-3.2.0-1420-omap4
  • USN-1610-1: linux, linux-image-3.2.0-32-virtual, 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-generic, linux-image-3.2.0-32-powerpc64-smp, linux-image-3.2.0-32-highbank