USN-3385-1: Linux kernel vulnerabilities
11 August 2017
Several security issues were fixed in the Linux kernel.
Releases
Packages
- linux - Linux kernel
- linux-aws - Linux kernel for Amazon Web Services (AWS) systems
- linux-gke - Linux kernel for Google Container Engine (GKE) systems
- linux-raspi2 - Linux kernel for Raspberry Pi 2
- linux-snapdragon - Linux kernel for Snapdragon processors
Details
Andrey Konovalov discovered a race condition in the UDP Fragmentation
Offload (UFO) code in the Linux kernel. A local attacker could use this to
cause a denial of service or execute arbitrary code. (CVE-2017-1000112)
Andrey Konovalov discovered a race condition in AF_PACKET socket option
handling code in the Linux kernel. A local unprivileged attacker could use
this to cause a denial of service or possibly execute arbitrary code.
(CVE-2017-1000111)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04
-
linux-image-4.4.0-1026-gke
-
4.4.0-1026.26
-
linux-image-4.4.0-1030-aws
-
4.4.0-1030.39
-
linux-image-4.4.0-1069-raspi2
-
4.4.0-1069.77
-
linux-image-4.4.0-1071-snapdragon
-
4.4.0-1071.76
-
linux-image-4.4.0-91-generic
-
4.4.0-91.114
-
linux-image-4.4.0-91-generic-lpae
-
4.4.0-91.114
-
linux-image-4.4.0-91-lowlatency
-
4.4.0-91.114
-
linux-image-4.4.0-91-powerpc-e500mc
-
4.4.0-91.114
-
linux-image-4.4.0-91-powerpc-smp
-
4.4.0-91.114
-
linux-image-4.4.0-91-powerpc64-emb
-
4.4.0-91.114
-
linux-image-4.4.0-91-powerpc64-smp
-
4.4.0-91.114
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.