USN-3128-1: Linux kernel vulnerability
Ubuntu Security Notice USN-3128-1
11th November, 2016
linux vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 16.04 LTS
Summary
The system could be made to crash under certain conditions.
Software description
- linux
– Linux kernel
Details
Ondrej Kozina discovered that the keyring interface in the Linux kernel
contained a buffer overflow when displaying timeout events via the
/proc/keys interface. 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 version:
- Ubuntu 16.04 LTS:
-
linux-image-4.4.0-47-powerpc64-emb
4.4.0-47.68
-
linux-image-powerpc-e500mc
4.4.0.47.50
-
linux-image-4.4.0-47-lowlatency
4.4.0-47.68
-
linux-image-4.4.0-47-powerpc64-smp
4.4.0-47.68
-
linux-image-4.4.0-47-generic
4.4.0-47.68
-
linux-image-4.4.0-47-powerpc-smp
4.4.0-47.68
-
linux-image-powerpc-smp
4.4.0.47.50
-
linux-image-generic-lpae
4.4.0.47.50
-
linux-image-powerpc64-emb
4.4.0.47.50
-
linux-image-virtual
4.4.0.47.50
-
linux-image-4.4.0-47-generic-lpae
4.4.0-47.68
-
linux-image-generic
4.4.0.47.50
-
linux-image-lowlatency
4.4.0.47.50
-
linux-image-4.4.0-47-powerpc-e500mc
4.4.0-47.68
-
linux-image-powerpc64-smp
4.4.0.47.50
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
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
Source: USN-3128-1: Linux kernel vulnerability
