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USN-3797-1: Linux kernel vulnerabilities

23 October 2018

Several security issues were fixed in the Linux kernel.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Releases

Packages

Details

Noam Rathaus discovered that a use-after-free vulnerability existed in the
Infiniband implementation in the Linux kernel. An attacker could use this
to cause a denial of service (system crash). (CVE-2018-14734)

It was discovered that an integer overflow existed in the CD-ROM driver of
the Linux kernel. A local attacker could use this to expose sensitive
information (kernel memory). (CVE-2018-16658)

It was discovered that an integer overflow existed in the HID Bluetooth
implementation in the Linux kernel that could lead to a buffer overwrite.
An attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2018-9363)

Yves Younan discovered that the CIPSO labeling implementation in the Linux
kernel did not properly handle IP header options in some situations. A
remote attacker could use this to specially craft network traffic that
could cause a denial of service (infinite loop). (CVE-2018-10938)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

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-3797-2: linux-image-4.4.0-138-lowlatency, linux-image-extra-4.4.0-138-generic, linux-image-4.4.0-138-powerpc64-smp, linux-image-4.4.0-138-generic, linux-image-4.4.0-138-generic-lpae, linux-image-4.4.0-1032-aws, linux-image-4.4.0-138-powerpc-smp, linux-aws, linux-image-4.4.0-138-powerpc-e500mc, linux-lts-xenial, linux-image-4.4.0-138-powerpc64-emb
  • USN-3847-2: linux-image-unsigned-4.15.0-1026-gcp, linux-image-unsigned-4.15.0-43-generic, linux-aws-hwe, linux-image-4.15.0-43-generic-lpae, linux-image-4.15.0-43-lowlatency, linux-azure, linux-gcp, linux-image-unsigned-4.15.0-1036-azure, linux-image-4.15.0-43-generic, linux-image-unsigned-4.15.0-43-lowlatency, linux-image-4.15.0-1031-aws, linux-hwe
  • USN-3847-3: linux-azure, linux-image-unsigned-4.15.0-1036-azure
  • USN-3847-1: linux-image-unsigned-4.15.0-1036-azure, linux-aws, linux-image-4.15.0-43-snapdragon, linux-image-unsigned-4.15.0-1026-gcp, linux-kvm, linux-image-4.15.0-1028-kvm, linux-gcp, linux-raspi2, linux-image-unsigned-4.15.0-43-generic, linux-image-4.15.0-43-generic-lpae, linux-image-4.15.0-43-lowlatency, linux-image-4.15.0-43-generic, linux-image-4.15.0-1031-aws, linux-image-unsigned-4.15.0-43-lowlatency, linux, linux-image-unsigned-4.15.0-1030-oem, linux-oem, linux-azure, linux-image-4.15.0-1030-raspi2
  • USN-3849-2: linux-image-generic-lts-trusty, linux-image-3.13.0-164-generic-lpae, linux-image-3.13.0-164-generic, linux-lts-trusty, linux-image-generic-lpae-lts-trusty
  • USN-3849-1: linux-image-extra-3.13.0-164-generic, linux, linux-image-3.13.0-164-generic-lpae, linux-image-3.13.0-164-powerpc64-smp, linux-image-3.13.0-164-generic, linux-image-3.13.0-164-powerpc64-emb, linux-image-3.13.0-164-powerpc-smp, linux-image-3.13.0-164-lowlatency, linux-image-3.13.0-164-powerpc-e500, linux-image-3.13.0-164-powerpc-e500mc
  • USN-3820-3: linux-image-unsigned-4.15.0-1031-azure, linux-azure
  • USN-3820-2: linux-image-4.15.0-39-generic-lpae, linux-image-unsigned-4.15.0-39-lowlatency, linux-image-4.15.0-39-lowlatency, linux-image-unsigned-4.15.0-39-generic, linux-azure, linux-gcp, linux-image-unsigned-4.15.0-1024-gcp, linux-image-unsigned-4.15.0-1031-azure, linux-image-4.15.0-39-generic, linux-hwe
  • USN-3820-1: linux-image-unsigned-4.15.0-1026-oem, linux-image-unsigned-4.15.0-39-generic, linux-aws, linux-image-4.15.0-39-snapdragon, linux-kvm, linux-image-4.15.0-1027-aws, linux-gcp, linux-image-unsigned-4.15.0-1024-gcp, linux-raspi2, linux-image-unsigned-4.15.0-39-lowlatency, linux-image-unsigned-4.15.0-1031-azure, linux-image-4.15.0-39-generic, linux-image-4.15.0-39-generic-lpae, linux, linux-image-4.15.0-1026-kvm, linux-image-4.15.0-39-lowlatency, linux-oem, linux-azure, linux-image-4.15.0-1028-raspi2
  • USN-3822-2: linux-image-3.13.0-162-generic, linux-image-generic-lts-trusty, linux-image-3.13.0-162-generic-lpae, linux-lts-trusty, linux-image-generic-lpae-lts-trusty
  • USN-3822-1: linux-image-3.13.0-162-powerpc64-smp, linux-image-3.13.0-162-generic, linux-image-extra-3.13.0-162-generic, linux, linux-image-3.13.0-162-powerpc-e500, linux-image-3.13.0-162-powerpc-e500mc, linux-image-3.13.0-162-powerpc-smp, linux-image-3.13.0-162-generic-lpae, linux-image-3.13.0-162-powerpc64-emb, linux-image-3.13.0-162-lowlatency