USN-3129-1: Linux kernel vulnerability
11 November 2016
The system could be made to crash under certain conditions.
Releases
Packages
- linux - Linux kernel
Details
Ondrej Kozina discovered that the keyring interface in the Linux kernel
contained a buffer overflow when displaying timeout events via the
/proc/keys interface. 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
-
4.8.0.27.36
-
linux-image-powerpc-e500mc
-
4.8.0.27.36
-
linux-image-4.8.0-27-lowlatency
-
4.8.0-27.29
-
linux-image-generic-lpae
-
4.8.0.27.36
-
linux-image-4.8.0-27-generic
-
4.8.0-27.29
-
linux-image-4.8.0-27-generic-lpae
-
4.8.0-27.29
-
linux-image-4.8.0-27-powerpc64-emb
-
4.8.0-27.29
-
linux-image-powerpc64-smp
-
4.8.0.27.36
-
linux-image-generic
-
4.8.0.27.36
-
linux-image-4.8.0-27-powerpc-e500mc
-
4.8.0-27.29
-
linux-image-lowlatency
-
4.8.0.27.36
-
linux-image-powerpc64-emb
-
4.8.0.27.36
-
linux-image-virtual
-
4.8.0.27.36
-
linux-image-4.8.0-27-powerpc-smp
-
4.8.0-27.29
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
Related notices
- USN-3127-1: linux-image-3.13.0-101-generic-lpae, linux-image-3.13.0-101-powerpc64-emb, linux-image-3.13.0-101-powerpc64-smp, linux-image-extra-3.13.0-101-generic, linux-image-3.13.0-101-powerpc-smp, linux, linux-image-3.13.0-101-powerpc-e500mc, linux-image-3.13.0-101-generic, linux-image-3.13.0-101-lowlatency, linux-image-3.13.0-101-powerpc-e500
- USN-3127-2: linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-101-generic-lpae, linux-image-generic-lts-trusty, linux-lts-trusty, linux-image-3.13.0-101-generic
- USN-3126-1: linux-image-3.2.0-115-generic-pae, linux-image-3.2.0-115-omap, linux-image-generic-pae, linux-image-virtual, linux-image-omap, linux-image-3.2.0-115-powerpc64-smp, linux-image-powerpc, linux-image-3.2.0-115-highbank, linux-image-powerpc-smp, linux-image-3.2.0-115-powerpc-smp, linux-image-3.2.0-115-generic, linux, linux-image-3.2.0-115-virtual, linux-image-generic, linux-image-highbank, linux-image-powerpc64-smp
- USN-3126-2: linux-image-omap4, linux-image-3.2.0-1493-omap4, linux-ti-omap4
- USN-3161-3: linux-image-4.4.0-1038-raspi2, linux-raspi2
- USN-3129-2: linux-image-4.8.0-1018-raspi2, linux-image-raspi2, linux-raspi2
- USN-3128-1: linux-image-4.4.0-47-powerpc64-smp, linux-image-4.4.0-47-powerpc-smp, linux-image-extra-4.4.0-47-generic, linux-image-4.4.0-47-powerpc-e500mc, linux-image-4.4.0-47-generic, linux-image-4.4.0-47-powerpc64-emb, linux, linux-image-4.4.0-47-generic-lpae, linux-image-4.4.0-47-lowlatency
- USN-3128-3: linux-image-4.4.0-1035-snapdragon, linux-snapdragon
- USN-3128-2: linux-image-4.4.0-47-powerpc64-smp, linux-image-4.4.0-47-powerpc-smp, linux-image-extra-4.4.0-47-generic, linux-image-4.4.0-47-powerpc-e500mc, linux-image-4.4.0-47-generic, linux-image-4.4.0-47-powerpc64-emb, linux-image-4.4.0-47-generic-lpae, linux-image-4.4.0-47-lowlatency, linux-lts-xenial