USN-3036-1: Linux kernel (Utopic HWE) vulnerability
14 July 2016
The system could be made to crash under certain conditions.
Releases
Packages
- linux-lts-utopic - Linux hardware enablement kernel from Utopic for Trusty
Details
Jan Stancek discovered that the Linux kernel's memory manager did not
properly handle moving pages mapped by the asynchronous I/O (AIO) ring
buffer to the other nodes. A local attacker could use this to cause a
denial of service (system crash).
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 14.04
-
linux-image-3.16.0-77-generic
-
3.16.0-77.99~14.04.1
-
linux-image-3.16.0-77-generic-lpae
-
3.16.0-77.99~14.04.1
-
linux-image-3.16.0-77-lowlatency
-
3.16.0-77.99~14.04.1
-
linux-image-3.16.0-77-powerpc-e500mc
-
3.16.0-77.99~14.04.1
-
linux-image-3.16.0-77-powerpc-smp
-
3.16.0-77.99~14.04.1
-
linux-image-3.16.0-77-powerpc64-emb
-
3.16.0-77.99~14.04.1
-
linux-image-3.16.0-77-powerpc64-smp
-
3.16.0-77.99~14.04.1
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-3035-3: linux-image-4.2.0-42-powerpc-e500mc, linux-image-4.2.0-42-lowlatency, linux-image-4.2.0-42-powerpc-smp, linux-image-4.2.0-42-generic, linux-image-4.2.0-42-generic-lpae, linux-image-4.2.0-42-powerpc64-smp, linux-lts-wily, linux-image-4.2.0-42-powerpc64-emb, linux-image-extra-4.2.0-42-generic
- USN-3037-1: linux-image-extra-3.19.0-65-generic, linux-image-3.19.0-65-lowlatency, linux-image-3.19.0-65-powerpc64-smp, linux-lts-vivid, linux-image-3.19.0-65-powerpc-smp, linux-image-3.19.0-65-powerpc64-emb, linux-image-3.19.0-65-generic-lpae, linux-image-3.19.0-65-powerpc-e500mc, linux-image-3.19.0-65-generic
- USN-3034-1: linux-image-3.13.0-92-powerpc64-smp, linux-image-3.13.0-92-generic, linux-image-extra-3.13.0-92-generic, linux-image-3.13.0-92-lowlatency, linux-image-3.13.0-92-powerpc64-emb, linux-image-3.13.0-92-powerpc-e500mc, linux, linux-image-3.13.0-92-generic-lpae, linux-image-3.13.0-92-powerpc-smp, linux-image-3.13.0-92-powerpc-e500
- USN-3034-2: linux-lts-trusty, linux-image-3.13.0-92-generic-lpae, linux-image-3.13.0-92-generic
- USN-3035-1: linux-image-4.2.0-42-powerpc-e500mc, linux-image-4.2.0-42-lowlatency, linux-image-4.2.0-42-powerpc-smp, linux-image-4.2.0-42-generic, linux-image-4.2.0-42-generic-lpae, linux-image-4.2.0-42-powerpc64-smp, linux, linux-image-4.2.0-42-powerpc64-emb
- USN-3035-2: linux-raspi2, linux-image-4.2.0-1034-raspi2