Ubuntu Security Notice USN-3104-1
19th October, 2016
linux vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 12.04 LTS
Summary
The system could be made to run programs as an administrator.
Software description
- linux
– Linux kernel
Details
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
privileges.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 12.04 LTS:
-
linux-image-3.2.0-113-powerpc64-smp
3.2.0-113.155
-
linux-image-3.2.0-113-powerpc-smp
3.2.0-113.155
-
linux-image-3.2.0-113-generic-pae
3.2.0-113.155
-
linux-image-3.2.0-113-virtual
3.2.0-113.155
-
linux-image-3.2.0-113-generic
3.2.0-113.155
-
linux-image-3.2.0-113-omap
3.2.0-113.155
-
linux-image-3.2.0-113-highbank
3.2.0-113.155
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.