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USN-2198-1: Linux kernel vulnerability

6 May 2014

The system could be made to crash or run programs as an administrator.




A flaw was discovered in the Linux kernel's pseudo tty (pty) device. An
unprivileged user could exploit this flaw to cause a denial of service
(system crash) or potentially gain administrator privileges.

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-2197-1: linux-image-2.6.32-363-ec2, linux-ec2
  • USN-2260-1: linux-image-3.13.0-30-generic-lpae, linux-image-3.13.0-30-generic, linux-lts-trusty
  • USN-2201-1: linux-lts-saucy, linux-image-3.11.0-20-generic, linux-image-3.11.0-20-generic-lpae
  • USN-2203-1: linux-image-3.11.0-20-generic, linux-image-3.11.0-20-generic-lpae, linux
  • USN-2196-1: linux-image-2.6.32-58-server, linux-image-2.6.32-58-sparc64-smp, linux-image-2.6.32-58-lpia, linux-image-2.6.32-58-sparc64, linux-image-2.6.32-58-386, linux-image-2.6.32-58-powerpc64-smp, linux-image-2.6.32-58-virtual, linux, linux-image-2.6.32-58-preempt, linux-image-2.6.32-58-powerpc-smp, linux-image-2.6.32-58-versatile, linux-image-2.6.32-58-ia64, linux-image-2.6.32-58-generic-pae, linux-image-2.6.32-58-generic, linux-image-2.6.32-58-powerpc
  • USN-2200-1: linux-lts-raring, linux-image-3.8.0-39-generic
  • USN-2204-1: linux-image-3.13.0-24-powerpc-smp, linux-image-3.13.0-24-powerpc64-emb, linux-image-extra-3.13.0-24-generic, linux, linux-image-3.13.0-24-lowlatency, linux-image-3.13.0-24-generic-lpae, linux-image-3.13.0-24-powerpc-e500mc, linux-image-3.13.0-24-powerpc-e500, linux-image-3.13.0-24-powerpc64-smp, linux-image-3.13.0-24-generic
  • USN-2199-1: linux-image-3.5.0-49-generic, linux-lts-quantal
  • USN-2227-1: linux-ti-omap4, linux-image-3.2.0-1446-omap4
  • USN-2202-1: linux-image-3.5.0-49-powerpc64-smp, linux-image-3.5.0-49-omap, linux, linux-image-3.5.0-49-highbank, linux-image-3.5.0-49-powerpc-smp, linux-image-3.5.0-49-generic