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USN-2584-1: Linux kernel (EC2) vulnerability

30 April 2015

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

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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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A race condition between chown() and execve() was discovered in the Linux
kernel. A local attacker could exploit this race by using chown on a
setuid-user-binary to gain administrative privileges.

Reduce your security exposure

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.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 10.04

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-2600-1: linux-image-3.16.0-37-powerpc-e500mc, linux-image-3.16.0-37-powerpc-smp, linux-image-3.16.0-37-lowlatency, linux-image-3.16.0-37-powerpc64-smp, linux-image-3.16.0-37-generic-lpae, linux-image-3.16.0-37-powerpc64-emb, linux-image-3.16.0-37-generic, linux
  • USN-2598-1: linux-image-3.13.0-52-powerpc-e500mc, linux-image-3.13.0-52-generic, linux-image-3.13.0-52-powerpc64-smp, linux-image-3.13.0-52-powerpc-smp, linux-image-extra-3.13.0-52-generic, linux-image-3.13.0-52-powerpc-e500, linux-image-3.13.0-52-lowlatency, linux-image-3.13.0-52-powerpc64-emb, linux-image-3.13.0-52-generic-lpae, linux
  • USN-2612-1: linux-ti-omap4, linux-image-3.2.0-1464-omap4
  • USN-2596-1: linux-image-3.2.0-83-virtual, linux-image-3.2.0-83-highbank, linux-image-3.2.0-83-generic-pae, linux-image-3.2.0-83-powerpc-smp, linux-image-3.2.0-83-generic, linux-image-3.2.0-83-omap, linux, linux-image-3.2.0-83-powerpc64-smp
  • USN-2583-1: linux-image-2.6.32-74-powerpc-smp, linux-image-2.6.32-74-sparc64-smp, linux-image-2.6.32-74-preempt, linux-image-2.6.32-74-generic-pae, linux-image-2.6.32-74-386, linux-image-2.6.32-74-powerpc64-smp, linux-image-2.6.32-74-powerpc, linux-image-2.6.32-74-generic, linux-image-2.6.32-74-versatile, linux-image-2.6.32-74-ia64, linux-image-2.6.32-74-lpia, linux, linux-image-2.6.32-74-server, linux-image-2.6.32-74-sparc64, linux-image-2.6.32-74-virtual
  • USN-2599-1: linux-image-3.16.0-37-powerpc-e500mc, linux-image-3.16.0-37-powerpc-smp, linux-image-3.16.0-37-lowlatency, linux-image-3.16.0-37-powerpc64-smp, linux-lts-utopic, linux-image-extra-3.16.0-37-generic, linux-image-3.16.0-37-generic-lpae, linux-image-3.16.0-37-powerpc64-emb, linux-image-3.16.0-37-generic
  • USN-2597-1: linux-image-3.13.0-52-generic-lpae, linux-image-3.13.0-52-generic, linux-lts-trusty
  • USN-2601-1: linux-image-3.19.0-16-generic-lpae, linux-image-3.19.0-16-powerpc64-emb, linux-image-3.19.0-16-generic, linux-image-3.19.0-16-powerpc-e500mc, linux-image-3.19.0-16-lowlatency, linux-image-3.19.0-16-powerpc-smp, linux, linux-image-3.19.0-16-powerpc64-smp