USN-319-1: Linux kernel vulnerability

18 July 2006

Linux kernel vulnerability

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Releases

Details

A race condition has been discovered in the file permission handling
of the /proc file system. A local attacker could exploit this to
execute arbitrary code with full root privileges.

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Update instructions

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

Ubuntu 6.06
  • linux-image-2.6.15-26-hppa32-smp - 2.6.15-26.45
  • linux-image-2.6.15-26-powerpc64-smp - 2.6.15-26.45
  • linux-image-2.6.15-26-hppa64 - 2.6.15-26.45
  • linux-image-2.6.15-26-386 - 2.6.15-26.45
  • linux-image-2.6.15-26-amd64-xeon - 2.6.15-26.45
  • linux-image-2.6.15-26-amd64-server - 2.6.15-26.45
  • linux-image-2.6.15-26-amd64-k8 - 2.6.15-26.45
  • linux-image-2.6.15-26-hppa64-smp - 2.6.15-26.45
  • linux-image-2.6.15-26-k7 - 2.6.15-26.45
  • linux-image-2.6.15-26-server-bigiron - 2.6.15-26.45
  • linux-image-2.6.15-26-powerpc - 2.6.15-26.45
  • linux-image-2.6.15-26-mckinley-smp - 2.6.15-26.45
  • linux-image-2.6.15-26-amd64-generic - 2.6.15-26.45
  • linux-image-2.6.15-26-server - 2.6.15-26.45
  • linux-image-2.6.15-26-mckinley - 2.6.15-26.45
  • linux-image-2.6.15-26-itanium-smp - 2.6.15-26.45
  • linux-image-2.6.15-26-hppa32 - 2.6.15-26.45
  • linux-image-2.6.15-26-686 - 2.6.15-26.45
  • linux-image-2.6.15-26-itanium - 2.6.15-26.45
  • linux-image-2.6.15-26-powerpc-smp - 2.6.15-26.45
  • linux-image-2.6.15-26-sparc64 - 2.6.15-26.45
  • linux-image-2.6.15-26-sparc64-smp - 2.6.15-26.45

After a standard system upgrade you need to reboot your computer to
effect the necessary changes.

This flaw affects Ubuntu 5.04 and Ubuntu 5.10 as well; these releases
will be fixed shortly in a followup advisory.

References

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