USN-3470-1: Linux kernel vulnerabilities

31 October 2017

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux - Linux kernel

Details

Qian Zhang discovered a heap-based buffer overflow in the tipc_msg_build()
function in the Linux kernel. A local attacker could use to cause a denial
of service (system crash) or possibly execute arbitrary code with
administrative privileges. (CVE-2016-8632)

Dmitry Vyukov discovered that a race condition existed in the timerfd
subsystem of the Linux kernel when handling might_cancel queuing. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2017-10661)

It was discovered that the Flash-Friendly File System (f2fs) implementation
in the Linux kernel did not properly validate superblock metadata. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2017-10662, CVE-2017-10663)

Anthony Perard discovered that the Xen virtual block driver did not
properly initialize some data structures before passing them to user space.
A local attacker in a guest VM could use this to expose sensitive
information from the host OS or other guest VMs. (CVE-2017-10911)

It was discovered that a use-after-free vulnerability existed in the POSIX
message queue implementation in the Linux kernel. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-11176)

Dave Chinner discovered that the XFS filesystem did not enforce that the
realtime inode flag was settable only on filesystems on a realtime device.
A local attacker could use this to cause a denial of service (system
crash). (CVE-2017-14340)

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-3469-1: linux-image-4.4.0-98-powerpc64-smp, linux-image-4.4.0-98-generic-lpae, linux-kvm, linux-image-powerpc64-emb, linux-image-powerpc-smp, linux-image-gke, linux-image-4.4.0-1009-kvm, linux-aws, linux-image-kvm, linux-image-generic-lpae, linux-raspi2, linux-image-raspi2, linux-image-4.4.0-1076-raspi2, linux-image-powerpc-e500mc, linux-image-4.4.0-98-powerpc64-emb, linux-image-4.4.0-98-lowlatency, linux-image-powerpc64-smp, linux-gke, linux-image-4.4.0-1033-gke, linux-image-snapdragon, linux-image-4.4.0-98-generic, linux-image-4.4.0-98-powerpc-smp, linux-image-4.4.0-1078-snapdragon, linux-image-aws, linux-image-lowlatency, linux, linux-image-generic, linux-snapdragon, linux-image-4.4.0-98-powerpc-e500mc, linux-image-4.4.0-1039-aws
  • USN-3470-2: linux-lts-trusty, linux-image-generic-lts-trusty, linux-image-3.13.0-135-generic, linux-image-3.13.0-135-generic-lpae, linux-image-generic-lpae-lts-trusty
  • USN-3468-2: linux-image-4.10.0-38-lowlatency, linux-image-lowlatency-hwe-16.04, linux-image-generic-hwe-16.04, linux-image-4.10.0-38-generic-lpae, linux-image-generic-lpae-hwe-16.04, linux-hwe, linux-image-4.10.0-38-generic
  • USN-3420-2: linux-lts-xenial, linux-image-generic-lts-xenial, linux-image-generic-lpae-lts-xenial, linux-image-lowlatency-lts-xenial, linux-image-powerpc-smp-lts-xenial, linux-image-powerpc64-smp-lts-xenial, linux-image-4.4.0-96-powerpc-smp, linux-image-powerpc-e500mc-lts-xenial, linux-image-4.4.0-96-generic-lpae, linux-image-4.4.0-96-generic, linux-image-4.4.0-96-powerpc64-emb, linux-image-4.4.0-96-powerpc64-smp, linux-image-4.4.0-96-lowlatency, linux-image-powerpc64-emb-lts-xenial, linux-image-4.4.0-96-powerpc-e500mc
  • USN-3468-3: linux-image-gcp, linux-gcp, linux-image-4.10.0-1008-gcp
  • USN-3469-2: linux-lts-xenial, linux-image-generic-lts-xenial, linux-image-generic-lpae-lts-xenial, linux-image-4.4.0-98-powerpc64-smp, linux-image-powerpc-smp-lts-xenial, linux-image-powerpc64-smp-lts-xenial, linux-image-4.4.0-98-generic-lpae, linux-image-powerpc-e500mc-lts-xenial, linux-image-powerpc64-emb-lts-xenial, linux-image-4.4.0-98-generic, linux-image-4.4.0-98-powerpc64-emb, linux-image-4.4.0-98-lowlatency, linux-image-4.4.0-98-powerpc-smp, linux-image-4.4.0-98-powerpc-e500mc, linux-image-lowlatency-lts-xenial
  • USN-3405-1: linux-image-4.4.0-93-lowlatency, linux-image-4.4.0-1028-gke, linux-image-powerpc64-emb, linux-image-powerpc-smp, linux-image-gke, linux-image-4.4.0-1071-raspi2, linux-aws, linux-image-generic-lpae, linux-raspi2, linux-image-raspi2, linux-image-4.4.0-93-generic-lpae, linux-image-4.4.0-93-powerpc64-emb, linux-image-4.4.0-93-powerpc-smp, linux-image-powerpc64-smp, linux-gke, linux-image-snapdragon, linux-image-4.4.0-93-powerpc64-smp, linux-image-4.4.0-1073-snapdragon, linux-image-aws, linux-image-lowlatency, linux, linux-image-4.4.0-1032-aws, linux-image-4.4.0-93-generic, linux-image-generic, linux-snapdragon, linux-image-4.4.0-93-powerpc-e500mc
  • USN-3420-1: linux-image-4.4.0-1076-snapdragon, linux-image-4.4.0-96-generic-lpae, linux-image-4.4.0-96-powerpc64-emb, linux-image-4.4.0-1035-aws, linux-kvm, linux-image-powerpc64-emb, linux-image-powerpc-smp, linux-image-gke, linux-image-4.4.0-96-powerpc-e500mc, linux-aws, linux-image-kvm, linux-image-generic-lpae, linux-raspi2, linux-image-raspi2, linux-image-4.4.0-96-generic, linux-image-4.4.0-1074-raspi2, linux-image-powerpc-e500mc, linux-image-4.4.0-96-lowlatency, linux-image-powerpc64-smp, linux-gke, linux-image-4.4.0-96-powerpc-smp, linux-image-snapdragon, linux-image-4.4.0-1031-gke, linux-image-4.4.0-96-powerpc64-smp, linux-image-aws, linux-image-lowlatency, linux, linux-image-generic, linux-snapdragon, linux-image-4.4.0-1007-kvm
  • USN-3405-2: linux-lts-xenial, linux-image-4.4.0-93-lowlatency, linux-image-generic-lpae-lts-xenial, linux-image-generic-lts-xenial, linux-image-lowlatency-lts-xenial, linux-image-powerpc-smp-lts-xenial, linux-image-powerpc64-smp-lts-xenial, linux-image-powerpc-e500mc-lts-xenial, linux-image-4.4.0-93-generic-lpae, linux-image-4.4.0-93-powerpc64-smp, linux-image-4.4.0-93-generic, linux-image-4.4.0-93-powerpc64-emb, linux-image-powerpc64-emb-lts-xenial, linux-image-4.4.0-93-powerpc-smp, linux-image-4.4.0-93-powerpc-e500mc
  • USN-3468-1: linux-image-4.10.0-38-lowlatency, linux-image-4.10.0-1020-raspi2, linux-image-lowlatency, linux-image-generic-lpae, linux-raspi2, linux-image-raspi2, linux-image-4.10.0-38-generic-lpae, linux, linux-image-generic, linux-image-4.10.0-38-generic
  • USN-3312-1: linux-image-4.4.0-1057-raspi2, linux-image-powerpc64-emb, linux-image-powerpc-smp, linux-image-gke, linux-aws, linux-image-4.4.0-1014-gke, linux-image-generic-lpae, linux-raspi2, linux-image-raspi2, linux-image-4.4.0-79-generic, linux-image-powerpc-e500mc, linux-image-powerpc64-smp, linux-gke, linux-image-virtual, linux-image-snapdragon, linux-image-4.4.0-1018-aws, linux-image-4.4.0-79-powerpc-smp, linux-image-aws, linux-image-lowlatency, linux-snapdragon, linux, linux-image-4.4.0-1059-snapdragon, linux-image-4.4.0-79-lowlatency, linux-image-4.4.0-79-powerpc-e500mc, linux-image-generic, linux-image-4.4.0-79-powerpc64-smp, linux-image-4.4.0-79-generic-lpae
  • USN-3312-2: linux-lts-xenial, linux-image-generic-lts-xenial, linux-image-generic-lpae-lts-xenial, linux-image-powerpc-smp-lts-xenial, linux-image-powerpc64-smp-lts-xenial, linux-image-powerpc-e500mc-lts-xenial, linux-image-4.4.0-79-generic, linux-image-4.4.0-79-powerpc64-emb, linux-image-4.4.0-79-lowlatency, linux-image-4.4.0-79-powerpc-smp, linux-image-4.4.0-79-powerpc-e500mc, linux-image-powerpc64-emb-lts-xenial, linux-image-4.4.0-79-powerpc64-smp, linux-image-4.4.0-79-generic-lpae, linux-image-lowlatency-lts-xenial
  • USN-3190-2: linux-raspi2, linux-image-raspi2, linux-image-4.8.0-1024-raspi2
  • USN-3190-1: linux-image-4.8.0-37-powerpc-smp, linux-image-4.8.0-37-powerpc-e500mc, linux-image-lowlatency, linux-image-4.8.0-37-lowlatency, linux-image-generic-lpae, linux-image-4.8.0-37-generic-lpae, linux-image-4.8.0-37-generic, linux-image-4.8.0-37-powerpc64-emb, linux, linux-image-generic, linux-image-powerpc-e500mc, linux-image-powerpc64-emb, linux-image-powerpc-smp
  • USN-3414-1: qemu-system-s390x, qemu-system-mips, qemu-system-aarch64, qemu, qemu-system-sparc, qemu-system-ppc, qemu-system-arm, qemu-system-misc, qemu-system, qemu-system-x86