USN-3106-1: Linux kernel vulnerability
19 October 2016
- linux - Linux kernel
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
The problem can be corrected by updating your system to the following package versions:
- linux-image-4.4.0-45-generic - 4.4.0-45.66
- linux-image-4.4.0-45-generic-lpae - 4.4.0-45.66
- linux-image-4.4.0-45-lowlatency - 4.4.0-45.66
- linux-image-4.4.0-45-powerpc-e500mc - 4.4.0-45.66
- linux-image-4.4.0-45-powerpc-smp - 4.4.0-45.66
- linux-image-4.4.0-45-powerpc64-emb - 4.4.0-45.66
- linux-image-4.4.0-45-powerpc64-smp - 4.4.0-45.66
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.