Ubuntu Security Notice USN-2872-1
19th January, 2016
linux vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.10
Summary
The system could be made to crash or run programs as an administrator.
Software description
- linux
– Linux kernel
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 version:
- Ubuntu 15.10:
-
linux-image-4.2.0-25-powerpc64-smp
4.2.0-25.30
-
linux-image-4.2.0-25-powerpc-smp
4.2.0-25.30
-
linux-image-4.2.0-25-lowlatency
4.2.0-25.30
-
linux-image-4.2.0-25-powerpc-e500mc
4.2.0-25.30
-
linux-image-4.2.0-25-generic-lpae
4.2.0-25.30
-
linux-image-4.2.0-25-powerpc64-emb
4.2.0-25.30
-
linux-image-4.2.0-25-generic
4.2.0-25.30
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: ubuntu-usn
