USN-3161-3: Linux kernel (Raspberry Pi 2) vulnerabilities

20 December 2016

Several security issues were fixed in the kernel.

Releases

Packages

Details

Tilman Schmidt and Sasha Levin discovered a use-after-free condition in the
TTY implementation in the Linux kernel. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2015-8964)

It was discovered that the Video For Linux Two (v4l2) implementation in the
Linux kernel did not properly handle multiple planes when processing a
VIDIOC_DQBUF ioctl(). A local attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code. (CVE-2016-4568)

CAI Qian discovered that shared bind mounts in a mount namespace
exponentially added entries without restriction to the Linux kernel's mount
table. A local attacker could use this to cause a denial of service (system
crash). (CVE-2016-6213)

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). (CVE-2016-7042)

Andreas Gruenbacher and Jan Kara discovered that the filesystem
implementation in the Linux kernel did not clear the setgid bit during a
setxattr call. A local attacker could use this to possibly elevate group
privileges. (CVE-2016-7097)

Marco Grassi discovered that the driver for Areca RAID Controllers in the
Linux kernel did not properly validate control messages. A local attacker
could use this to cause a denial of service (system crash) or possibly gain
privileges. (CVE-2016-7425)

It was discovered that the KVM implementation for x86/x86_64 in the Linux
kernel could dereference a null pointer. An attacker in a guest virtual
machine could use this to cause a denial of service (system crash) in the
KVM host. (CVE-2016-8630)

Eyal Itkin discovered that the IP over IEEE 1394 (FireWire) implementation
in the Linux kernel contained a buffer overflow when handling fragmented
packets. A remote attacker could use this to possibly execute arbitrary
code with administrative privileges. (CVE-2016-8633)

Marco Grassi discovered that the TCP implementation in the Linux kernel
mishandles socket buffer (skb) truncation. A local attacker could use this
to cause a denial of service (system crash). (CVE-2016-8645)

Daxing Guo discovered a stack-based buffer overflow in the Broadcom
IEEE802.11n FullMAC driver in the Linux kernel. A local attacker could use
this to cause a denial of service (system crash) or possibly gain
privileges. (CVE-2016-8658)

It was discovered that an information leak existed in __get_user_asm_ex()
in the Linux kernel. A local attacker could use this to expose sensitive
information. (CVE-2016-9178)

Andrey Konovalov discovered that the SCTP implementation in the Linux
kernel improperly handled validation of incoming data. A remote attacker
could use this to cause a denial of service (system crash). (CVE-2016-9555)

Update instructions

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

Ubuntu 16.04

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-3126-1: linux-image-3.2.0-115-virtual, linux-image-generic-pae, linux-image-generic, linux-image-highbank, linux-image-powerpc-smp, linux-image-powerpc, linux-image-3.2.0-115-highbank, linux-image-3.2.0-115-powerpc64-smp, linux-image-3.2.0-115-generic, linux-image-omap, linux-image-3.2.0-115-powerpc-smp, linux-image-powerpc64-smp, linux-image-3.2.0-115-omap, linux-image-3.2.0-115-generic-pae, linux-image-virtual, linux
  • USN-3126-2: linux-ti-omap4, linux-image-omap4, linux-image-3.2.0-1493-omap4
  • USN-3127-1: linux-image-3.13.0-101-powerpc64-smp, linux-image-3.13.0-101-lowlatency, linux-image-3.13.0-101-powerpc64-emb, linux-image-3.13.0-101-powerpc-e500mc, linux-image-extra-3.13.0-101-generic, linux-image-3.13.0-101-powerpc-smp, linux-image-3.13.0-101-powerpc-e500, linux-image-3.13.0-101-generic, linux, linux-image-3.13.0-101-generic-lpae
  • USN-3127-2: linux-image-generic-lts-trusty, linux-lts-trusty, linux-image-3.13.0-101-generic, linux-image-3.13.0-101-generic-lpae, linux-image-generic-lpae-lts-trusty
  • USN-3128-1: linux-image-4.4.0-47-lowlatency, linux-image-4.4.0-47-generic, linux-image-4.4.0-47-powerpc-smp, linux-image-4.4.0-47-generic-lpae, linux-image-4.4.0-47-powerpc64-smp, linux-image-extra-4.4.0-47-generic, linux-image-4.4.0-47-powerpc64-emb, linux, linux-image-4.4.0-47-powerpc-e500mc
  • USN-3128-2: linux-image-4.4.0-47-lowlatency, linux-image-4.4.0-47-generic, linux-lts-xenial, linux-image-4.4.0-47-powerpc-e500mc, linux-image-4.4.0-47-powerpc64-smp, linux-image-extra-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-powerpc-smp
  • USN-3128-3: linux-snapdragon, linux-image-4.4.0-1035-snapdragon
  • USN-3129-1: linux-image-4.8.0-27-generic, linux-image-powerpc-smp, linux-image-generic, linux-image-powerpc-e500mc, linux-image-4.8.0-27-lowlatency, linux-image-powerpc64-smp, linux-image-lowlatency, linux-image-4.8.0-27-generic-lpae, linux-image-4.8.0-27-powerpc-e500mc, linux-image-4.8.0-27-powerpc-smp, linux-image-4.8.0-27-powerpc64-emb, linux-image-powerpc64-emb, linux-image-virtual, linux, linux-image-generic-lpae
  • USN-3129-2: linux-image-raspi2, linux-image-4.8.0-1018-raspi2, linux-raspi2
  • USN-3144-1: linux-image-3.2.0-116-powerpc-smp, linux-image-generic-pae, linux-image-generic, linux-image-highbank, linux-image-3.2.0-116-generic-pae, linux-image-powerpc-smp, linux-image-3.2.0-116-highbank, linux-image-3.2.0-116-omap, linux-image-omap, linux-image-3.2.0-116-generic, linux-image-powerpc64-smp, linux-image-3.2.0-116-powerpc64-smp, linux-image-3.2.0-116-virtual, linux-image-virtual, linux
  • USN-3144-2: linux-image-3.2.0-1494-omap4, linux-ti-omap4, linux-image-omap4
  • USN-3145-1: linux-image-3.13.0-103-powerpc64-emb, linux-image-3.13.0-103-generic-lpae, linux-image-extra-3.13.0-103-generic, linux-image-3.13.0-103-generic, linux-image-3.13.0-103-lowlatency, linux-image-3.13.0-103-powerpc64-smp, linux, linux-image-3.13.0-103-powerpc-e500, linux-image-3.13.0-103-powerpc-smp, linux-image-3.13.0-103-powerpc-e500mc
  • USN-3145-2: linux-image-3.13.0-103-generic-lpae, linux-image-3.13.0-103-generic, linux-image-generic-lts-trusty, linux-lts-trusty, linux-image-generic-lpae-lts-trusty
  • USN-3146-1: linux-image-4.4.0-51-powerpc-e500mc, linux-image-4.4.0-51-powerpc64-emb, linux-image-4.4.0-51-powerpc64-smp, linux-image-4.4.0-51-powerpc-smp, linux-image-extra-4.4.0-51-generic, linux-image-4.4.0-51-generic-lpae, linux, linux-image-4.4.0-51-generic, linux-image-4.4.0-51-lowlatency
  • USN-3146-2: linux-image-4.4.0-51-powerpc-e500mc, linux-image-4.4.0-51-powerpc64-emb, linux-image-4.4.0-51-powerpc64-smp, linux-lts-xenial, linux-image-4.4.0-51-powerpc-smp, linux-image-extra-4.4.0-51-generic, linux-image-4.4.0-51-generic-lpae, linux-image-4.4.0-51-generic, linux-image-4.4.0-51-lowlatency
  • USN-3147-1: linux-image-powerpc-smp, linux-image-generic, linux-image-4.8.0-28-generic-lpae, linux-image-4.8.0-28-powerpc64-emb, linux-image-4.8.0-28-generic, linux-image-4.8.0-28-lowlatency, linux-image-powerpc-e500mc, linux-image-4.8.0-28-powerpc-smp, linux-image-4.8.0-28-powerpc-e500mc, linux-image-lowlatency, linux-image-powerpc64-emb, linux, linux-image-generic-lpae
  • USN-3160-1: linux-image-3.13.0-106-powerpc64-smp, linux-image-3.13.0-106-generic-lpae, linux-image-3.13.0-106-powerpc-e500, linux-image-3.13.0-106-generic, linux-image-3.13.0-106-powerpc-smp, linux-image-3.13.0-106-lowlatency, linux, linux-image-3.13.0-106-powerpc64-emb, linux-image-3.13.0-106-powerpc-e500mc, linux-image-extra-3.13.0-106-generic
  • USN-3160-2: linux-image-3.13.0-106-generic-lpae, linux-image-3.13.0-106-generic, linux-image-generic-lts-trusty, linux-lts-trusty, linux-image-generic-lpae-lts-trusty
  • USN-3161-1: linux-image-4.4.0-57-lowlatency, linux-image-4.4.0-57-powerpc64-emb, linux-image-4.4.0-57-powerpc64-smp, linux-image-4.4.0-57-powerpc-smp, linux-image-4.4.0-57-powerpc-e500mc, linux-image-4.4.0-57-generic-lpae, linux, linux-image-4.4.0-57-generic, linux-image-extra-4.4.0-57-generic
  • USN-3161-2: linux-image-4.4.0-57-lowlatency, linux-image-4.4.0-57-powerpc64-emb, linux-image-4.4.0-57-powerpc64-smp, linux-lts-xenial, linux-image-4.4.0-57-powerpc-e500mc, linux-image-4.4.0-57-generic-lpae, linux-image-4.4.0-57-powerpc-smp, linux-image-4.4.0-57-generic, linux-image-extra-4.4.0-57-generic
  • USN-3161-4: linux-snapdragon, linux-image-4.4.0-1042-snapdragon
  • USN-3162-1: linux-image-4.8.0-32-powerpc64-emb, linux-image-powerpc-smp, linux-image-generic, linux-image-4.8.0-32-generic, linux-image-4.8.0-32-generic-lpae, linux-image-powerpc-e500mc, linux-image-4.8.0-32-powerpc-e500mc, linux-image-4.8.0-32-powerpc-smp, linux-image-lowlatency, linux-image-powerpc64-emb, linux-image-4.8.0-32-lowlatency, linux, linux-image-generic-lpae
  • USN-3162-2: linux-image-raspi2, linux-image-4.8.0-1021-raspi2, linux-raspi2
  • USN-3187-1: linux-image-generic-pae, linux-image-highbank, linux-image-generic, linux-image-powerpc-smp, linux-image-3.2.0-121-highbank, linux-image-3.2.0-121-powerpc64-smp, linux-image-omap, linux-image-3.2.0-121-generic, linux-image-powerpc64-smp, linux-image-3.2.0-121-powerpc-smp, linux-image-3.2.0-121-virtual, linux-image-virtual, linux, linux-image-3.2.0-121-generic-pae, linux-image-3.2.0-121-omap
  • USN-3187-2: linux-image-3.2.0-1499-omap4, linux-ti-omap4, linux-image-omap4
  • USN-3188-1: linux-image-3.13.0-108-powerpc64-smp, linux-image-3.13.0-108-generic, linux-image-3.13.0-108-generic-lpae, linux-image-3.13.0-108-powerpc64-emb, linux-image-3.13.0-108-powerpc-e500mc, linux-image-3.13.0-108-powerpc-e500, linux-image-3.13.0-108-powerpc-smp, linux, linux-image-3.13.0-108-lowlatency, linux-image-extra-3.13.0-108-generic
  • USN-3188-2: linux-image-3.13.0-108-generic, linux-image-3.13.0-108-generic-lpae, linux-image-generic-lts-trusty, linux-lts-trusty, linux-image-generic-lpae-lts-trusty
  • USN-3290-1: linux-image-3.13.0-119-powerpc64-smp, linux-image-3.13.0-119-powerpc64-emb, linux-image-3.13.0-119-lowlatency, linux-image-3.13.0-119-powerpc-e500mc, linux-image-3.13.0-119-generic-lpae, linux-image-extra-3.13.0-119-generic, linux, linux-image-3.13.0-119-powerpc-smp, linux-image-3.13.0-119-powerpc-e500, linux-image-3.13.0-119-generic
  • USN-3360-1: linux-image-3.13.0-125-lowlatency, linux-image-3.13.0-125-powerpc64-emb, linux-image-3.13.0-125-generic-lpae, linux-image-3.13.0-125-powerpc-e500, linux-image-3.13.0-125-powerpc-smp, linux-image-3.13.0-125-powerpc-e500mc, linux-image-extra-3.13.0-125-generic, linux-image-3.13.0-125-powerpc64-smp, linux, linux-image-3.13.0-125-generic
  • USN-3360-2: linux-image-generic-lts-trusty, linux-image-3.13.0-125-generic-lpae, linux-lts-trusty, linux-image-3.13.0-125-generic, linux-image-generic-lpae-lts-trusty
  • USN-3422-1: linux-image-extra-3.13.0-132-generic, linux-image-3.13.0-132-powerpc64-emb, linux-image-3.13.0-132-powerpc-e500, linux-image-3.13.0-132-powerpc64-smp, linux-image-3.13.0-132-lowlatency, linux-image-3.13.0-132-generic, linux-image-3.13.0-132-powerpc-e500mc, linux, linux-image-3.13.0-132-generic-lpae, linux-image-3.13.0-132-powerpc-smp
  • USN-3422-2: linux-image-generic-lts-trusty, linux-lts-trusty, linux-image-3.13.0-132-generic, linux-image-3.13.0-132-generic-lpae, linux-image-generic-lpae-lts-trusty
  • USN-3445-1: linux-image-3.13.0-133-powerpc-smp, linux-image-extra-3.13.0-133-generic, linux-image-3.13.0-133-generic, linux-image-3.13.0-133-powerpc64-emb, linux-image-3.13.0-133-generic-lpae, linux-image-3.13.0-133-powerpc-e500, linux-image-3.13.0-133-powerpc-e500mc, linux, linux-image-3.13.0-133-powerpc64-smp, linux-image-3.13.0-133-lowlatency
  • USN-3445-2: linux-image-3.13.0-133-generic, linux-image-3.13.0-133-generic-lpae, linux-image-generic-lts-trusty, linux-lts-trusty, linux-image-generic-lpae-lts-trusty