USN-3151-1: Linux kernel vulnerability

Releases

• Ubuntu 16.04 ESM

Packages

• linux - Linux kernel

Details

Philip Pettersson discovered a race condition in the af_packet
implementation in the Linux kernel. A local unprivileged attacker could use
this to cause a denial of service (system crash) or run arbitrary code with
administrative privileges.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04

• linux-image-4.4.0-53-generic - 4.4.0-53.74
• linux-image-4.4.0-53-generic-lpae - 4.4.0-53.74
• linux-image-4.4.0-53-lowlatency - 4.4.0-53.74
• linux-image-4.4.0-53-powerpc-e500mc - 4.4.0-53.74
• linux-image-4.4.0-53-powerpc-smp - 4.4.0-53.74
• linux-image-4.4.0-53-powerpc64-emb - 4.4.0-53.74
• linux-image-4.4.0-53-powerpc64-smp - 4.4.0-53.74

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

• CVE-2016-8655

Related notices

• USN-3151-4: linux-raspi2, linux-image-4.4.0-1034-raspi2
• USN-3151-3: linux-image-4.4.0-1039-snapdragon, linux-snapdragon
• USN-3151-2: linux-image-4.4.0-53-generic-lpae, linux-image-4.4.0-53-generic, linux-image-4.4.0-53-powerpc-e500mc, linux-image-4.4.0-53-powerpc-smp, linux-lts-xenial, linux-image-4.4.0-53-lowlatency, linux-image-4.4.0-53-powerpc64-smp, linux-image-4.4.0-53-powerpc64-emb, linux-image-extra-4.4.0-53-generic
• USN-3149-1: linux-image-3.13.0-105-powerpc-e500, linux, linux-image-3.13.0-105-powerpc64-smp, linux-image-3.13.0-105-powerpc-e500mc, linux-image-3.13.0-105-powerpc-smp, linux-image-extra-3.13.0-105-generic, linux-image-3.13.0-105-generic-lpae, linux-image-3.13.0-105-generic, linux-image-3.13.0-105-lowlatency, linux-image-3.13.0-105-powerpc64-emb
• USN-3149-2: linux-lts-trusty, linux-image-generic-lts-trusty, linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-105-generic-lpae, linux-image-3.13.0-105-generic
• USN-3150-2: linux-image-omap4, linux-ti-omap4, linux-image-3.2.0-1496-omap4
• USN-3150-1: linux, linux-image-3.2.0-118-powerpc-smp, linux-image-powerpc64-smp, linux-image-virtual, linux-image-highbank, linux-image-omap, linux-image-3.2.0-118-highbank, linux-image-3.2.0-118-omap, linux-image-generic-pae, linux-image-generic, linux-image-3.2.0-118-virtual, linux-image-3.2.0-118-powerpc64-smp, linux-image-3.2.0-118-generic, linux-image-3.2.0-118-generic-pae, linux-image-powerpc-smp
• USN-3152-1: linux, linux-image-4.8.0-30-generic-lpae, linux-image-4.8.0-30-lowlatency, linux-image-4.8.0-30-powerpc-smp, linux-image-lowlatency, linux-image-powerpc-e500mc, linux-image-generic, linux-image-4.8.0-30-powerpc64-emb, linux-image-4.8.0-30-generic, linux-image-powerpc64-emb, linux-image-4.8.0-30-powerpc-e500mc, linux-image-generic-lpae, linux-image-powerpc-smp
• USN-3152-2: linux-image-4.8.0-1020-raspi2, linux-image-raspi2, linux-raspi2