USN-3266-1: Linux kernel vulnerability
25 April 2017
The system could be made to crash under certain conditions.
Releases
Packages
- linux - Linux kernel
- linux-raspi2 - Linux kernel for Raspberry Pi 2
Details
Alexander Popov discovered that a race condition existed in the Stream
Control Transmission Protocol (SCTP) implementation in the Linux kernel. 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 16.10
-
linux-image-powerpc-smp
-
4.8.0.49.61
-
linux-image-powerpc-e500mc
-
4.8.0.49.61
-
linux-image-4.8.0-49-generic-lpae
-
4.8.0-49.52
-
linux-image-4.8.0-1035-raspi2
-
4.8.0-1035.38
-
linux-image-generic-lpae
-
4.8.0.49.61
-
linux-image-4.8.0-49-lowlatency
-
4.8.0-49.52
-
linux-image-4.8.0-49-powerpc-smp
-
4.8.0-49.52
-
linux-image-4.8.0-49-powerpc-e500mc
-
4.8.0-49.52
-
linux-image-generic
-
4.8.0.49.61
-
linux-image-4.8.0-49-generic
-
4.8.0-49.52
-
linux-image-lowlatency
-
4.8.0.49.61
-
linux-image-raspi2
-
4.8.0.1035.39
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.