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USN-2718-1: Linux kernel (Vivid HWE) vulnerability

18 August 2015

The system could be made to crash under certain conditions.

Releases

Packages

Details

Marcelo Ricardo Leitner discovered a race condition in the Linux kernel's
SCTP address configuration lists when using Address Configuration Change
(ASCONF) options on a socket. An unprivileged local user could exploit this
flaw to cause a denial of service (system crash).

Update instructions

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

Ubuntu 14.04

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.

References

Related notices

  • USN-2713-1: linux-image-3.2.0-89-generic-pae, linux, linux-image-3.2.0-89-virtual, linux-image-3.2.0-89-powerpc64-smp, linux-image-3.2.0-89-omap, linux-image-3.2.0-89-powerpc-smp, linux-image-3.2.0-89-generic, linux-image-3.2.0-89-highbank
  • USN-2714-1: linux-ti-omap4, linux-image-3.2.0-1469-omap4
  • USN-2715-1: linux-image-3.13.0-62-generic-lpae, linux-image-3.13.0-62-generic, linux-lts-trusty
  • USN-2716-1: linux-image-3.13.0-62-powerpc64-emb, linux-image-3.13.0-62-powerpc-e500mc, linux-image-3.13.0-62-powerpc-e500, linux-image-3.13.0-62-powerpc-smp, linux-image-extra-3.13.0-62-generic, linux, linux-image-3.13.0-62-generic-lpae, linux-image-3.13.0-62-generic, linux-image-3.13.0-62-powerpc64-smp, linux-image-3.13.0-62-lowlatency
  • USN-2717-1: linux-image-3.16.0-46-generic-lpae, linux-image-3.16.0-46-powerpc64-emb, linux-lts-utopic, linux-image-3.16.0-46-generic, linux-image-extra-3.16.0-46-generic, linux-image-3.16.0-46-powerpc-smp, linux-image-3.16.0-46-lowlatency, linux-image-3.16.0-46-powerpc-e500mc, linux-image-3.16.0-46-powerpc64-smp
  • USN-2719-1: linux-image-3.19.0-26-powerpc64-emb, linux, linux-image-3.19.0-26-powerpc-e500mc, linux-image-3.19.0-26-generic-lpae, linux-image-3.19.0-26-lowlatency, linux-image-3.19.0-26-powerpc-smp, linux-image-3.19.0-26-powerpc64-smp, linux-image-3.19.0-26-generic