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USN-1535-1: Linux kernel vulnerabilities

10 August 2012

Several security issues were fixed in the kernel.

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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.

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An error was discovered in the Linux kernel's network TUN/TAP device
implementation. A local user with access to the TUN/TAP interface (which is
not available to unprivileged users until granted by a root user) could
exploit this flaw to crash the system or potential gain administrative
privileges. (CVE-2012-2136)

An error was discovered in the Linux kernel's memory subsystem (hugetlb).
An unprivileged local user could exploit this flaw to cause a denial of
service (crash the system). (CVE-2012-2390)

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.

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.

Related notices

  • USN-1531-1: linux-image-2.6.38-15-powerpc-smp, linux-image-2.6.38-15-versatile, linux-image-2.6.38-15-powerpc64-smp, linux-image-2.6.38-15-generic-pae, linux-image-2.6.38-15-virtual, linux, linux-image-2.6.38-15-server, linux-image-2.6.38-15-generic, linux-image-2.6.38-15-powerpc, linux-image-2.6.38-15-omap
  • USN-1533-1: linux-image-3.0.0-24-powerpc, linux-image-3.0.0-24-generic-pae, linux-image-3.0.0-24-server, linux-image-3.0.0-24-generic, linux-image-3.0.0-24-powerpc-smp, linux, linux-image-3.0.0-24-virtual, linux-image-3.0.0-24-omap, linux-image-3.0.0-24-powerpc64-smp
  • USN-1539-1: linux-lts-backport-oneiric, linux-image-3.0.0-24-generic-pae, linux-image-3.0.0-24-server, linux-image-3.0.0-24-generic, linux-image-3.0.0-24-virtual
  • USN-1529-1: linux-image-3.2.0-29-virtual, linux-image-3.2.0-29-powerpc-smp, linux-image-3.2.0-29-highbank, linux-image-3.2.0-29-omap, linux-image-3.2.0-29-powerpc64-smp, linux-image-3.2.0-29-generic, linux, linux-image-3.2.0-29-generic-pae
  • USN-1534-1: linux-image-2.6.32-347-ec2, linux-ec2
  • USN-1514-1: linux-image-3.2.0-1417-omap4, linux-ti-omap4
  • USN-1598-1: linux-image-2.6.24-32-powerpc-smp, linux-image-2.6.24-32-sparc64-smp, linux-image-2.6.24-32-powerpc, linux-image-2.6.24-32-openvz, linux-image-2.6.24-32-virtual, linux-image-2.6.24-32-powerpc64-smp, linux-image-2.6.24-32-lpiacompat, linux-image-2.6.24-32-sparc64, linux-image-2.6.24-32-hppa32, linux-image-2.6.24-32-xen, linux-image-2.6.24-32-rt, linux-image-2.6.24-32-generic, linux-image-2.6.24-32-mckinley, linux-image-2.6.24-32-server, linux-image-2.6.24-32-lpia, linux-image-2.6.24-32-386, linux-image-2.6.24-32-hppa64, linux, linux-image-2.6.24-32-itanium
  • USN-1532-1: linux-image-3.0.0-1214-omap4, linux-ti-omap4
  • USN-1538-1: linux-lts-backport-natty, linux-image-2.6.38-15-virtual, linux-image-2.6.38-15-generic-pae, linux-image-2.6.38-15-server, linux-image-2.6.38-15-generic
  • USN-1530-1: linux-ti-omap4, linux-image-2.6.38-1209-omap4
  • USN-1515-1: linux-image-3.2.0-27-generic-pae, linux-image-3.2.0-27-powerpc64-smp, linux-image-3.2.0-27-generic, linux-image-3.2.0-27-omap, linux-image-3.2.0-27-virtual, linux, linux-image-3.2.0-27-highbank, linux-image-3.2.0-27-powerpc-smp
  • USN-1508-1: linux-image-3.2.0-1416-omap4, linux-ti-omap4