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USN-2762-1: Linux kernel vulnerability

5 October 2015

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

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Releases

Packages

Details

Dmitry Vyukov discovered that the Linux kernel did not properly initialize
IPC object state in certain situations. A local attacker could use this to
escalate their privileges, expose confidential information, or cause a
denial of service (system crash).

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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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Update instructions

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

Ubuntu 15.04

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-2761-1: linux-image-3.13.0-65-generic-lpae, linux-image-3.13.0-65-generic, linux-image-3.13.0-65-powerpc-e500, linux, linux-image-extra-3.13.0-65-generic, linux-image-3.13.0-65-powerpc64-smp, linux-image-3.13.0-65-powerpc-e500mc, linux-image-3.13.0-65-lowlatency, linux-image-3.13.0-65-powerpc-smp, linux-image-3.13.0-65-powerpc64-emb
  • USN-2796-1: linux-ti-omap4, linux-image-3.2.0-1473-omap4
  • USN-2763-1: linux-image-3.13.0-65-generic-lpae, linux-image-3.13.0-65-generic, linux-lts-trusty
  • USN-2792-1: linux-image-3.2.0-93-highbank, linux, linux-image-3.2.0-93-generic-pae, linux-image-3.2.0-93-virtual, linux-image-3.2.0-93-powerpc-smp, linux-image-3.2.0-93-powerpc64-smp, linux-image-3.2.0-93-generic, linux-image-3.2.0-93-omap
  • USN-2764-1: linux-image-3.16.0-50-powerpc-smp, linux-image-3.16.0-50-powerpc-e500mc, linux-lts-utopic, linux-image-3.16.0-50-powerpc64-smp, linux-image-3.16.0-50-generic-lpae, linux-image-3.16.0-50-generic, linux-image-3.16.0-50-powerpc64-emb, linux-image-3.16.0-50-lowlatency, linux-image-extra-3.16.0-50-generic
  • USN-2765-1: linux-image-3.19.0-30-powerpc64-smp, linux-lts-vivid, linux-image-3.19.0-30-powerpc-e500mc, linux-image-extra-3.19.0-30-generic, linux-image-3.19.0-30-generic-lpae, linux-image-3.19.0-30-powerpc-smp, linux-image-3.19.0-30-lowlatency, linux-image-3.19.0-30-powerpc64-emb, linux-image-3.19.0-30-generic

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