USN-2872-3: Linux kernel (Raspberry Pi 2) vulnerability
19 January 2016
The system could be made to crash or run programs as an administrator.
Releases
Packages
- linux-raspi2 - Linux kernel for Raspberry Pi 2
Details
Yevgeny Pats discovered that the session keyring implementation in the
Linux kernel did not properly reference count when joining an existing
session keyring. A local attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code with
administrative privileges.
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 15.10
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-2872-2: linux-image-extra-4.2.0-25-generic, linux-image-4.2.0-25-generic, linux-image-4.2.0-25-powerpc64-smp, linux-image-4.2.0-25-powerpc64-emb, linux-image-4.2.0-25-lowlatency, linux-lts-wily, linux-image-4.2.0-25-powerpc-e500mc, linux-image-4.2.0-25-powerpc-smp, linux-image-4.2.0-25-generic-lpae
- USN-2870-1: linux-image-3.13.0-76-powerpc-smp, linux-image-3.13.0-76-powerpc64-emb, linux, linux-image-3.13.0-76-generic, linux-image-3.13.0-76-generic-lpae, linux-image-3.13.0-76-powerpc-e500mc, linux-image-3.13.0-76-lowlatency, linux-image-extra-3.13.0-76-generic, linux-image-3.13.0-76-powerpc64-smp, linux-image-3.13.0-76-powerpc-e500
- USN-2870-2: linux-lts-trusty, linux-image-3.13.0-76-generic, linux-image-3.13.0-76-generic-lpae
- USN-2873-1: linux-image-extra-3.16.0-59-generic, linux-image-3.16.0-59-generic-lpae, linux-image-3.16.0-59-powerpc64-emb, linux-image-3.16.0-59-powerpc-smp, linux-image-3.16.0-59-powerpc-e500mc, linux-image-3.16.0-59-powerpc64-smp, linux-image-3.16.0-59-lowlatency, linux-image-3.16.0-59-generic, linux-lts-utopic
- USN-2871-1: linux, linux-image-3.19.0-47-powerpc-e500mc, linux-image-3.19.0-47-generic-lpae, linux-image-3.19.0-47-powerpc64-emb, linux-image-3.19.0-47-lowlatency, linux-image-3.19.0-47-powerpc-smp, linux-image-3.19.0-47-powerpc64-smp, linux-image-3.19.0-47-generic
- USN-2872-1: linux, linux-image-4.2.0-25-generic, linux-image-4.2.0-25-powerpc64-smp, linux-image-4.2.0-25-powerpc64-emb, linux-image-4.2.0-25-lowlatency, linux-image-4.2.0-25-powerpc-e500mc, linux-image-4.2.0-25-powerpc-smp, linux-image-4.2.0-25-generic-lpae
- USN-2871-2: linux-image-3.19.0-47-powerpc-e500mc, linux-image-3.19.0-47-generic-lpae, linux-image-3.19.0-47-powerpc64-emb, linux-image-3.19.0-47-lowlatency, linux-image-3.19.0-47-powerpc-smp, linux-image-3.19.0-47-powerpc64-smp, linux-image-extra-3.19.0-47-generic, linux-lts-vivid, linux-image-3.19.0-47-generic