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USN-3674-1: Linux kernel vulnerabilities

11 June 2018

Several security issues were fixed in the Linux kernel.

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Releases

Packages

Details

It was discovered that the netfilter subsystem of the Linux kernel did not
properly validate ebtables offsets. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2018-1068)

It was discovered that a NULL pointer dereference existed in the RDS
(Reliable Datagram Sockets) protocol implementation in the Linux kernel. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2018-7492)

Eyal Itkin discovered that the USB displaylink video adapter driver in the
Linux kernel did not properly validate mmap offsets sent from userspace. A
local attacker could use this to expose sensitive information (kernel
memory) or possibly execute arbitrary code. (CVE-2018-8781)

Xingyuan Lin discovered that a out-of-bounds read existed in the USB Video
Class (UVC) driver of the Linux kernel. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2017-0627)

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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.

References

Related notices

  • USN-3674-2: linux-lts-trusty, linux-image-generic-lts-trusty, linux-image-3.13.0-151-generic, linux-image-3.13.0-151-generic-lpae, linux-image-generic-lpae-lts-trusty
  • USN-3654-2: linux-image-4.4.0-127-powerpc64-smp, linux-image-4.4.0-127-powerpc-e500mc, linux-lts-xenial, linux-image-4.4.0-1022-aws, linux-image-4.4.0-127-generic-lpae, linux-image-4.4.0-127-generic, linux-image-extra-4.4.0-127-generic, linux-image-4.4.0-127-powerpc64-emb, linux-image-4.4.0-127-lowlatency, linux-image-4.4.0-127-powerpc-smp, linux-aws
  • USN-3654-1: linux-image-4.4.0-127-powerpc64-smp, linux, linux-image-4.4.0-127-powerpc-e500mc, linux-image-4.4.0-127-generic-lpae, linux-kvm, linux-image-4.4.0-127-generic, linux-image-extra-4.4.0-127-generic, linux-image-4.4.0-1060-aws, linux-image-4.4.0-127-powerpc64-emb, linux-image-4.4.0-127-lowlatency, linux-image-4.4.0-127-powerpc-smp, linux-image-4.4.0-1026-kvm, linux-aws
  • USN-3656-1: linux-image-4.4.0-1090-raspi2, linux-raspi2, linux-snapdragon, linux-image-4.4.0-1093-snapdragon
  • USN-3677-1: linux, linux-image-4.13.0-45-generic-lpae, linux-image-4.13.0-45-generic, linux-image-generic, linux-image-generic-lpae, linux-image-4.13.0-1022-raspi2, linux-image-raspi2, linux-image-4.13.0-45-lowlatency, linux-image-lowlatency, linux-raspi2
  • USN-3677-2: linux-gcp, linux-hwe, linux-image-4.13.0-45-generic-lpae, linux-image-4.13.0-45-generic, linux-image-4.13.0-1019-gcp, linux-image-extra-4.13.0-1019-gcp, linux-image-extra-4.13.0-45-generic, linux-oem, linux-image-4.13.0-45-lowlatency, linux-image-4.13.0-1030-oem
  • USN-3619-2: linux-image-4.4.0-119-powerpc-smp, linux-lts-xenial, linux-image-4.4.0-119-generic-lpae, linux-image-4.4.0-119-powerpc-e500mc, linux-image-4.4.0-119-powerpc64-smp, linux-image-4.4.0-1016-aws, linux-image-extra-4.4.0-119-generic, linux-image-4.4.0-119-lowlatency, linux-image-4.4.0-119-powerpc64-emb, linux-image-4.4.0-119-generic, linux-aws
  • USN-3619-1: linux-image-4.4.0-119-powerpc-smp, linux, linux-raspi2, linux-image-4.4.0-119-generic-lpae, linux-image-4.4.0-1088-snapdragon, linux-image-4.4.0-119-powerpc-e500mc, linux-image-4.4.0-1054-aws, linux-image-4.4.0-119-powerpc64-smp, linux-image-extra-4.4.0-119-generic, linux-kvm, linux-image-4.4.0-119-lowlatency, linux-image-4.4.0-119-powerpc64-emb, linux-snapdragon, linux-image-4.4.0-1020-kvm, linux-image-4.4.0-119-generic, linux-aws, linux-image-4.4.0-1086-raspi2

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