USN-1698-1: Linux kernel (OMAP4) vulnerabilities

18 January 2013

Several security issues were fixed in the kernel.

Releases

Packages

Details

A flaw was discovered in the Linux kernel's handling of script execution
when module loading is enabled. A local attacker could exploit this flaw to
cause a leak of kernel stack contents. (CVE-2012-4530)

Florian Weimer discovered that hypervkvpd, which is distributed in the
Linux kernel, was not correctly validating source addresses of netlink
packets. An untrusted local user can cause a denial of service by causing
hypervkvpd to exit. (CVE-2012-5532)

Update instructions

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

Ubuntu 12.04

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-1683-1: linux-image-2.6.32-45-sparc64, linux-image-2.6.32-45-powerpc64-smp, linux-image-2.6.32-45-powerpc, linux-image-2.6.32-45-powerpc-smp, linux-image-2.6.32-45-server, linux-image-2.6.32-45-lpia, linux-image-2.6.32-45-sparc64-smp, linux-image-2.6.32-45-versatile, linux-image-2.6.32-45-386, linux-image-2.6.32-45-virtual, linux, linux-image-2.6.32-45-generic-pae, linux-image-2.6.32-45-ia64, linux-image-2.6.32-45-generic, linux-image-2.6.32-45-preempt
  • USN-1696-1: linux-image-3.2.0-36-powerpc-smp, linux-image-3.2.0-36-powerpc64-smp, linux-image-3.2.0-36-omap, linux-image-3.2.0-36-virtual, linux-image-3.2.0-36-highbank, linux, linux-image-3.2.0-36-generic-pae, linux-image-3.2.0-36-generic
  • USN-1699-1: linux-image-3.5.0-22-highbank, linux-image-3.5.0-22-powerpc64-smp, linux-image-3.5.0-22-generic, linux, linux-image-3.5.0-22-omap, linux-image-3.5.0-22-powerpc-smp
  • USN-1720-1: linux-image-3.0.0-31-virtual, linux-image-3.0.0-31-powerpc64-smp, linux-image-3.0.0-31-server, linux-image-3.0.0-31-powerpc, linux-image-3.0.0-31-omap, linux, linux-image-3.0.0-31-generic, linux-image-3.0.0-31-generic-pae, linux-image-3.0.0-31-powerpc-smp
  • USN-1704-1: linux-image-3.5.0-22-generic, linux-lts-quantal
  • USN-1684-1: linux-ec2, linux-image-2.6.32-350-ec2
  • USN-1689-1: linux-image-3.0.0-30-powerpc64-smp, linux-image-3.0.0-30-powerpc, linux-image-3.0.0-30-generic, linux-image-3.0.0-30-omap, linux-image-3.0.0-30-virtual, linux-image-3.0.0-30-generic-pae, linux-image-3.0.0-30-server, linux, linux-image-3.0.0-30-powerpc-smp
  • USN-1688-1: linux-image-3.0.0-30-virtual, linux-image-3.0.0-30-generic, linux-image-3.0.0-30-generic-pae, linux-image-3.0.0-30-server, linux-lts-backport-oneiric
  • USN-1700-1: linux-ti-omap4, linux-image-3.5.0-217-omap4
  • USN-1726-1: linux-image-3.0.0-1221-omap4, linux-ti-omap4
  • USN-1691-1: linux-ti-omap4, linux-image-3.0.0-1220-omap4