USN-3251-1: Linux kernel vulnerability
29 March 2017
The system could be made to crash or run programs as an administrator.
Releases
Packages
- linux - Linux kernel
- linux-raspi2 - Linux kernel for Raspberry Pi 2
Details
It was discovered that the xfrm framework for transforming packets in the
Linux kernel did not properly validate data received from user space. A
local attacker could use this to cause a denial of service (system crash)
or execute arbitrary code with administrative privileges.
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.10
-
linux-image-4.8.0-45-powerpc-e500mc
-
4.8.0-45.48
-
linux-image-powerpc-smp
-
4.8.0.45.57
-
linux-image-powerpc-e500mc
-
4.8.0.45.57
-
linux-image-4.8.0-45-generic-lpae
-
4.8.0-45.48
-
linux-image-generic
-
4.8.0.45.57
-
linux-image-4.8.0-45-powerpc-smp
-
4.8.0-45.48
-
linux-image-4.8.0-45-generic
-
4.8.0-45.48
-
linux-image-4.8.0-1032-raspi2
-
4.8.0-1032.35
-
linux-image-generic-lpae
-
4.8.0.45.57
-
linux-image-4.8.0-45-lowlatency
-
4.8.0-45.48
-
linux-image-lowlatency
-
4.8.0.45.57
-
linux-image-raspi2
-
4.8.0.1032.36
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.