USN-3107-2: Linux kernel (Raspberry Pi 2) vulnerability

24 October 2016

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

Releases

Packages

Details

It was discovered that a race condition existed in the memory manager of
the Linux kernel when handling copy-on-write breakage of private read-only
memory mappings. A local attacker could use this to gain administrative
privileges.

Update instructions

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

Ubuntu 16.10

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.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References

Related notices

  • USN-3104-1: linux-image-3.2.0-113-powerpc64-smp, linux-image-3.2.0-113-highbank, linux-image-3.2.0-113-virtual, linux-image-3.2.0-113-omap, linux-image-3.2.0-113-generic-pae, linux-image-3.2.0-113-powerpc-smp, linux, linux-image-3.2.0-113-generic
  • USN-3106-4: linux-image-4.4.0-1032-snapdragon, linux-snapdragon
  • USN-3105-2: linux-image-3.13.0-100-generic-lpae, linux-image-3.13.0-100-generic, linux-lts-trusty
  • USN-3105-1: linux-image-3.13.0-100-powerpc-smp, linux-image-3.13.0-100-powerpc-e500mc, linux-image-3.13.0-100-powerpc-e500, linux-image-3.13.0-100-generic-lpae, linux-image-3.13.0-100-lowlatency, linux-image-3.13.0-100-generic, linux, linux-image-3.13.0-100-powerpc64-smp, linux-image-3.13.0-100-powerpc64-emb
  • USN-3107-1: linux-image-4.8.0-26-powerpc64-emb, linux-image-4.8.0-26-powerpc-smp, linux-image-4.8.0-26-powerpc-e500mc, linux-image-4.8.0-26-lowlatency, linux-image-4.8.0-26-generic, linux-image-4.8.0-26-generic-lpae, linux
  • USN-3104-2: linux-image-3.2.0-1491-omap4, linux-ti-omap4
  • USN-3106-1: linux-image-4.4.0-45-generic-lpae, linux-image-4.4.0-45-powerpc-smp, linux-image-4.4.0-45-generic, linux-image-4.4.0-45-powerpc64-smp, linux-image-4.4.0-45-lowlatency, linux-image-4.4.0-45-powerpc-e500mc, linux, linux-image-4.4.0-45-powerpc64-emb
  • USN-3106-2: linux-lts-xenial, linux-image-4.4.0-45-generic-lpae, linux-image-4.4.0-45-powerpc-smp, linux-image-4.4.0-45-generic, linux-image-4.4.0-45-powerpc64-smp, linux-image-4.4.0-45-lowlatency, linux-image-4.4.0-45-powerpc-e500mc, linux-image-4.4.0-45-powerpc64-emb
  • USN-3106-3: linux-image-4.4.0-1029-raspi2, linux-raspi2