USN-3630-1: Linux kernel vulnerability
23 April 2018
The system could be made to crash under certain conditions.
Releases
Packages
- linux - Linux kernel
- linux-raspi2 - Linux kernel for Raspberry Pi 2
Details
It was discovered that the Broadcom UniMAC MDIO bus controller driver in
the Linux kernel did not properly validate device resources. 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 17.10
-
linux-image-4.13.0-1017-raspi2
-
4.13.0-1017.18
-
linux-image-generic
-
4.13.0.39.42
-
linux-image-generic-lpae
-
4.13.0.39.42
-
linux-image-4.13.0-39-generic-lpae
-
4.13.0-39.44
-
linux-image-4.13.0-39-generic
-
4.13.0-39.44
-
linux-image-4.13.0-39-lowlatency
-
4.13.0-39.44
-
linux-image-lowlatency
-
4.13.0.39.42
-
linux-image-raspi2
-
4.13.0.1017.15
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.