USN-2989-1: Linux kernel vulnerabilities

01 June 2016

Several security issues were fixed in the kernel.

Releases

Packages

  • linux - Linux kernel

Details

Justin Yackoski discovered that the Atheros L2 Ethernet Driver in the Linux
kernel incorrectly enables scatter/gather I/O. A remote attacker could use
this to obtain potentially sensitive information from kernel memory.
(CVE-2016-2117)

Jason A. Donenfeld discovered multiple out-of-bounds reads in the OZMO USB
over wifi device drivers in the Linux kernel. A remote attacker could use
this to cause a denial of service (system crash) or obtain potentially
sensitive information from kernel memory. (CVE-2015-4004)

Andy Lutomirski discovered a race condition in the Linux kernel's
translation lookaside buffer (TLB) handling of flush events. A local
attacker could use this to cause a denial of service or possibly leak
sensitive information. (CVE-2016-2069)

Ralf Spenneberg discovered that the Linux kernel's GTCO digitizer USB
device driver did not properly validate endpoint descriptors. An attacker
with physical access could use this to cause a denial of service (system
crash). (CVE-2016-2187)

Hector Marco and Ismael Ripoll discovered that the Linux kernel would
improperly disable Address Space Layout Randomization (ASLR) for x86
processes running in 32 bit mode if stack-consumption resource limits were
disabled. A local attacker could use this to make it easier to exploit an
existing vulnerability in a setuid/setgid program. (CVE-2016-3672)

Andrey Konovalov discovered that the CDC Network Control Model USB driver
in the Linux kernel did not cancel work events queued if a later error
occurred, resulting in a use-after-free. An attacker with physical access
could use this to cause a denial of service (system crash). (CVE-2016-3951)

It was discovered that an out-of-bounds write could occur when handling
incoming packets in the USB/IP implementation in the Linux kernel. A remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2016-3955)

Kangjie Lu discovered an information leak in the ANSI/IEEE 802.2 LLC type 2
Support implementations in the Linux kernel. A local attacker could use
this to obtain potentially sensitive information from kernel memory.
(CVE-2016-4485)

Kangjie Lu discovered an information leak in the routing netlink socket
interface (rtnetlink) implementation in the Linux kernel. A local attacker
could use this to obtain potentially sensitive information from kernel
memory. (CVE-2016-4486)

It was discovered that in some situations the Linux kernel did not handle
propagated mounts correctly. A local unprivileged attacker could use this
to cause a denial of service (system crash). (CVE-2016-4581)

Update instructions

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

Ubuntu 14.04

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.

Related notices

  • USN-2908-1: linux-image-4.2.0-30-powerpc64-smp, linux-image-4.2.0-30-powerpc64-emb, linux-image-4.2.0-30-powerpc-e500mc, linux-image-4.2.0-30-generic, linux-image-4.2.0-30-lowlatency, linux-image-4.2.0-30-generic-lpae, linux, linux-image-4.2.0-30-powerpc-smp
  • USN-2908-2: linux-lts-wily, linux-image-4.2.0-30-powerpc64-smp, linux-image-4.2.0-30-powerpc64-emb, linux-image-4.2.0-30-powerpc-e500mc, linux-image-4.2.0-30-generic, linux-image-4.2.0-30-lowlatency, linux-image-4.2.0-30-generic-lpae, linux-image-4.2.0-30-powerpc-smp
  • USN-2908-3: linux-raspi2, linux-image-4.2.0-1025-raspi2
  • USN-2931-1: linux-image-3.16.0-67-lowlatency, linux-image-3.16.0-67-powerpc-e500mc, linux-lts-utopic, linux-image-3.16.0-67-powerpc64-smp, linux-image-3.16.0-67-powerpc64-emb, linux-image-3.16.0-67-generic, linux-image-3.16.0-67-powerpc-smp, linux-image-3.16.0-67-generic-lpae
  • USN-2932-1: linux-image-3.19.0-56-powerpc-e500mc, linux-image-3.19.0-56-powerpc64-emb, linux-image-3.19.0-56-powerpc64-smp, linux-image-3.19.0-56-powerpc-smp, linux-lts-vivid, linux-image-3.19.0-56-generic-lpae, linux-image-3.19.0-56-lowlatency, linux-image-3.19.0-56-generic
  • USN-2965-1: linux-image-4.4.0-22-powerpc64-smp, linux-image-4.4.0-22-generic-lpae, linux-image-4.4.0-22-lowlatency, linux-image-4.4.0-22-generic, linux-image-4.4.0-22-powerpc64-emb, linux, linux-image-4.4.0-22-powerpc-e500mc, linux-image-4.4.0-22-powerpc-smp
  • USN-2965-2: linux-image-4.4.0-22-powerpc64-smp, linux-image-4.4.0-22-generic-lpae, linux-image-4.4.0-22-lowlatency, linux-lts-xenial, linux-image-4.4.0-22-generic, linux-image-4.4.0-22-powerpc64-emb, linux-image-4.4.0-22-powerpc-e500mc, linux-image-4.4.0-22-powerpc-smp
  • USN-2965-3: linux-raspi2, linux-image-4.4.0-1010-raspi2
  • USN-2965-4: linux-snapdragon, linux-image-4.4.0-1013-snapdragon
  • USN-2967-1: linux-image-3.2.0-102-powerpc-smp, linux-image-3.2.0-102-generic, linux-image-3.2.0-102-highbank, linux-image-3.2.0-102-generic-pae, linux-image-3.2.0-102-powerpc64-smp, linux-image-3.2.0-102-virtual, linux-image-3.2.0-102-omap, linux
  • USN-2967-2: linux-ti-omap4, linux-image-3.2.0-1480-omap4
  • USN-2996-1: linux-image-3.2.0-104-omap, linux-image-3.2.0-104-powerpc-smp, linux, linux-image-3.2.0-104-generic, linux-image-3.2.0-104-virtual, linux-image-3.2.0-104-powerpc64-smp, linux-image-3.2.0-104-generic-pae, linux-image-3.2.0-104-highbank
  • USN-2997-1: linux-ti-omap4, linux-image-3.2.0-1482-omap4
  • USN-2998-1: linux-lts-trusty, linux-image-3.13.0-88-generic, linux-image-3.13.0-88-generic-lpae
  • USN-3000-1: linux-image-3.16.0-73-generic, linux-image-3.16.0-73-lowlatency, linux-image-3.16.0-73-powerpc64-smp, linux-lts-utopic, linux-image-3.16.0-73-generic-lpae, linux-image-3.16.0-73-powerpc64-emb, linux-image-3.16.0-73-powerpc-smp, linux-image-3.16.0-73-powerpc-e500mc
  • USN-3001-1: linux-image-3.19.0-61-lowlatency, linux-image-3.19.0-61-powerpc-smp, linux-image-3.19.0-61-powerpc-e500mc, linux-lts-vivid, linux-image-3.19.0-61-powerpc64-emb, linux-image-3.19.0-61-generic-lpae, linux-image-3.19.0-61-powerpc64-smp, linux-image-3.19.0-61-generic
  • USN-3002-1: linux-lts-wily, linux-image-4.2.0-38-powerpc-smp, linux-image-4.2.0-38-powerpc64-emb, linux-image-4.2.0-38-lowlatency, linux-image-4.2.0-38-powerpc-e500mc, linux-image-4.2.0-38-generic-lpae, linux-image-4.2.0-38-powerpc64-smp, linux-image-4.2.0-38-generic
  • USN-3003-1: linux-image-4.2.0-38-powerpc-smp, linux-image-4.2.0-38-powerpc64-emb, linux-image-4.2.0-38-lowlatency, linux-image-4.2.0-38-powerpc-e500mc, linux-image-4.2.0-38-generic-lpae, linux, linux-image-4.2.0-38-powerpc64-smp, linux-image-4.2.0-38-generic
  • USN-3004-1: linux-image-4.2.0-1031-raspi2, linux-raspi2
  • USN-3005-1: linux-image-4.4.0-24-powerpc64-emb, linux-image-4.4.0-24-powerpc-e500mc, linux-image-4.4.0-24-generic, linux-lts-xenial, linux-image-4.4.0-24-powerpc-smp, linux-image-4.4.0-24-lowlatency, linux-image-4.4.0-24-powerpc64-smp, linux-image-4.4.0-24-generic-lpae
  • USN-3006-1: linux-image-4.4.0-24-powerpc64-emb, linux-image-4.4.0-24-powerpc-e500mc, linux, linux-image-4.4.0-24-generic, linux-image-4.4.0-24-powerpc-smp, linux-image-4.4.0-24-lowlatency, linux-image-4.4.0-24-powerpc64-smp, linux-image-4.4.0-24-generic-lpae
  • USN-3007-1: linux-image-4.4.0-1012-raspi2, linux-raspi2
  • USN-3021-1: linux-image-3.2.0-105-highbank, linux-image-3.2.0-105-virtual, linux-image-3.2.0-105-omap, linux-image-3.2.0-105-powerpc64-smp, linux-image-3.2.0-105-generic, linux, linux-image-3.2.0-105-powerpc-smp, linux-image-3.2.0-105-generic-pae
  • USN-3021-2: linux-ti-omap4, linux-image-3.2.0-1483-omap4