Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

USN-3879-1: Linux kernel vulnerabilities

4 February 2019

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

Wen Xu discovered that the ext4 file system implementation in the Linux
kernel could possibly perform an out of bounds write when updating the
journal for an inline file. An attacker could use this to construct a
malicious ext4 image that, when mounted, could cause a denial of service
(system crash). (CVE-2018-10883)

Vasily Averin and Pavel Tikhomirov discovered that the cleancache subsystem
of the Linux kernel did not properly initialize new files in some
situations. A local attacker could use this to expose sensitive
information. (CVE-2018-16862)

Wei Wu discovered that the KVM implementation in the Linux kernel did not
properly ensure that ioapics were initialized. A local attacker could use
this to cause a denial of service (system crash). (CVE-2018-19407)

Mathias Payer and Hui Peng discovered a use-after-free vulnerability in the
Advanced Linux Sound Architecture (ALSA) subsystem. A physically proximate
attacker could use this to cause a denial of service (system crash).
(CVE-2018-19824)

Hui Peng and Mathias Payer discovered that the USB subsystem in the Linux
kernel did not properly handle size checks when handling an extra USB
descriptor. A physically proximate attacker could use this to cause a
denial of service (system crash). (CVE-2018-20169)

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.

References

Related notices

  • USN-3871-4: linux-image-4.15.0-45-generic-lpae, linux-image-generic-hwe-16.04, linux-image-gcp, linux-image-aws-hwe, linux-image-generic-lpae-hwe-16.04, linux-image-virtual-hwe-16.04, linux-image-4.15.0-1027-gcp, linux-aws-hwe, linux-image-4.15.0-45-lowlatency, linux-image-lowlatency-hwe-16.04, linux-hwe, linux-gcp, linux-image-4.15.0-1032-aws, linux-image-4.15.0-45-generic, linux-image-oem, linux-image-gke
  • USN-3871-1: linux, linux-image-generic-hwe-16.04, linux-image-4.15.0-44-generic, linux-image-4.15.0-44-lowlatency, linux-image-generic-lpae-hwe-16.04-edge, linux-image-generic-hwe-16.04-edge, linux-image-virtual, linux-image-generic-lpae-hwe-16.04, linux-image-virtual-hwe-16.04-edge, linux-image-4.15.0-44-generic-lpae, linux-image-lowlatency, linux-image-lowlatency-hwe-16.04, linux-image-4.15.0-44-snapdragon, linux-image-snapdragon, linux-image-generic-lpae, linux-image-virtual-hwe-16.04, linux-image-generic, linux-image-lowlatency-hwe-16.04-edge
  • USN-3871-5: linux-image-azure, linux-image-4.15.0-1037-azure, linux-azure
  • USN-3879-2: linux-image-powerpc-e500mc-lts-xenial, linux-image-4.4.0-142-powerpc-smp, linux-image-4.4.0-142-lowlatency, linux-image-generic-lts-xenial, linux-aws, linux-lts-xenial, linux-image-4.4.0-1038-aws, linux-image-lowlatency-lts-xenial, linux-image-virtual-lts-xenial, linux-image-generic-lpae-lts-xenial, linux-image-4.4.0-142-powerpc64-smp, linux-image-4.4.0-142-powerpc64-emb, linux-image-powerpc-smp-lts-xenial, linux-image-powerpc64-smp-lts-xenial, linux-image-aws, linux-image-powerpc64-emb-lts-xenial, linux-image-4.4.0-142-generic, linux-image-4.4.0-142-generic-lpae, linux-image-4.4.0-142-powerpc-e500mc
  • USN-3871-3: linux-aws, linux-raspi2, linux-image-gcp, linux-image-kvm, linux-image-raspi2, linux-image-4.15.0-1029-kvm, linux-image-4.15.0-1033-oem, linux-image-aws, linux-image-4.15.0-1031-raspi2, linux-image-4.15.0-1027-gcp, linux-oem, linux-kvm, linux-gcp, linux-image-4.15.0-1032-aws, linux-image-oem, linux-image-gke
  • USN-4118-1: linux-aws, linux-image-aws-hwe, linux-image-aws, linux-aws-hwe, linux-image-4.15.0-1047-aws
  • USN-4094-1: linux-image-generic-hwe-16.04, linux-image-gcp, linux-image-kvm, linux-image-generic-lpae-hwe-16.04, linux-image-4.15.0-1042-kvm, linux-image-lowlatency-hwe-16.04, linux-image-4.15.0-1021-oracle, linux-image-4.15.0-58-generic-lpae, linux-gcp, linux-image-generic-hwe-16.04-edge, linux-image-4.15.0-1043-raspi2, linux-image-lowlatency, linux-image-4.15.0-1040-gke, linux-image-snapdragon, linux-image-virtual-hwe-16.04, linux-image-generic, linux-image-oem, linux-image-gke, linux-image-lowlatency-hwe-16.04-edge, linux-image-oracle, linux, linux-gke-4.15, linux-snapdragon, linux-image-generic-lpae-hwe-16.04-edge, linux-oem, linux-azure, linux-image-4.15.0-58-lowlatency, linux-image-generic-lpae, linux-image-virtual-hwe-16.04-edge, linux-raspi2, linux-hwe, linux-image-raspi2, linux-image-virtual, linux-image-4.15.0-58-generic, linux-image-gke-4.15, linux-kvm, linux-image-4.15.0-1050-oem, linux-image-4.15.0-1040-gcp, linux-image-4.15.0-1060-snapdragon, linux-oracle
  • USN-3878-1: linux-image-4.18.0-1009-raspi2, linux-image-gcp, linux-image-kvm, linux-image-4.18.0-14-lowlatency, linux-image-4.18.0-14-generic-lpae, linux-gcp, linux-aws, linux-image-4.18.0-1007-kvm, linux-image-4.18.0-14-snapdragon, linux-image-4.18.0-1008-aws, linux-image-lowlatency, linux-image-snapdragon, linux-image-4.18.0-14-generic, linux-image-generic, linux-image-gke, linux, linux-image-aws, linux-image-generic-lpae, linux-image-4.18.0-1006-gcp, linux-raspi2, linux-image-raspi2, linux-kvm
  • USN-3872-1: linux-image-virtual-hwe-18.04, linux-image-4.18.0-14-lowlatency, linux-image-generic-hwe-18.04, linux-image-snapdragon-hwe-18.04, linux-image-4.18.0-14-snapdragon, linux-image-4.18.0-14-generic-lpae, linux-image-lowlatency-hwe-18.04, linux-hwe, linux-image-generic-lpae-hwe-18.04, linux-image-4.18.0-14-generic
  • USN-3878-2: linux-image-4.18.0-1008-azure, linux-image-azure, linux-azure
  • USN-3933-2: linux-image-3.13.0-168-generic, linux-image-generic-lpae-lts-trusty, linux-image-generic-lts-trusty, linux-image-3.13.0-168-lowlatency, linux-image-3.13.0-168-generic-lpae, linux-lts-trusty
  • USN-3933-1: linux-image-highbank, linux-image-powerpc-e500mc, linux-image-3.13.0-168-generic, linux-image-generic-lts-trusty, linux-image-3.13.0-168-powerpc-e500mc, linux-image-generic-lts-saucy, linux-image-3.13.0-168-powerpc64-emb, linux-image-3.13.0-168-generic-lpae, linux-image-3.13.0-168-powerpc64-smp, linux-image-powerpc-smp, linux-image-generic-lts-quantal, linux-image-powerpc64-smp, linux-image-generic-lts-raring, linux-image-3.13.0-168-powerpc-smp, linux-image-lowlatency, linux-image-powerpc64-emb, linux-image-generic, linux-image-lowlatency-pae, linux, linux-image-generic-lpae-lts-saucy, linux-image-generic-lpae-lts-trusty, linux-image-omap, linux-image-powerpc-e500, linux-image-generic-lpae, linux-image-virtual, linux-image-3.13.0-168-lowlatency, linux-image-generic-pae, linux-image-3.13.0-168-powerpc-e500
  • USN-3930-2: linux-image-4.18.0-17-lowlatency, linux-image-4.18.0-17-generic-lpae, linux-image-virtual-hwe-18.04, linux-image-4.18.0-17-generic, linux-image-generic-hwe-18.04, linux-image-snapdragon-hwe-18.04, linux-image-azure, linux-image-4.18.0-17-snapdragon, linux-azure, linux-image-lowlatency-hwe-18.04, linux-hwe, linux-image-generic-lpae-hwe-18.04, linux-image-4.18.0-1014-azure
  • USN-3930-1: linux-image-4.18.0-17-lowlatency, linux-image-4.18.0-17-generic-lpae, linux-image-gcp, linux-image-kvm, linux-image-4.18.0-1008-gcp, linux-gcp, linux-image-4.18.0-17-snapdragon, linux-image-4.18.0-1012-aws, linux-aws, linux-image-4.18.0-1011-raspi2, linux-image-lowlatency, linux-image-4.18.0-1009-kvm, linux-image-snapdragon, linux-image-generic, linux-image-gke, linux, linux-image-4.18.0-17-generic, linux-image-aws, linux-image-azure, linux-azure, linux-image-generic-lpae, linux-image-4.18.0-1014-azure, linux-raspi2, linux-image-raspi2, linux-image-virtual, linux-kvm
  • USN-3931-2: linux-image-generic-hwe-16.04, linux-image-4.15.0-47-lowlatency, linux-image-4.15.0-47-generic-lpae, linux-image-gcp, linux-image-aws-hwe, linux-image-generic-lpae-hwe-16.04, linux-image-lowlatency-hwe-16.04, linux-gcp, linux-image-4.15.0-47-generic, linux-image-4.15.0-1010-oracle, linux-aws-hwe, linux-image-virtual-hwe-16.04, linux-image-oem, linux-image-gke, linux-image-oracle, linux-image-azure, linux-image-4.15.0-1029-gcp, linux-azure, linux-image-4.15.0-1035-aws, linux-image-4.15.0-1041-azure, linux-hwe, linux-oracle
  • USN-3931-1: linux-image-4.15.0-1033-raspi2, linux-image-generic-hwe-16.04, linux-image-4.15.0-47-lowlatency, linux-image-4.15.0-47-generic-lpae, linux-image-gcp, linux-image-kvm, linux-image-generic-lpae-hwe-16.04, linux-image-lowlatency-hwe-16.04, linux-gcp, linux-image-generic-hwe-16.04-edge, linux-aws, linux-image-4.15.0-47-generic, linux-image-4.15.0-1010-oracle, linux-image-4.15.0-47-snapdragon, linux-image-lowlatency, linux-image-snapdragon, linux-image-virtual-hwe-16.04, linux-image-generic, linux-image-oem, linux-image-gke, linux-image-lowlatency-hwe-16.04-edge, linux-image-oracle, linux, linux-image-generic-lpae-hwe-16.04-edge, linux-image-aws, linux-image-4.15.0-1031-kvm, linux-oem, linux-image-4.15.0-1029-gcp, linux-image-generic-lpae, linux-image-virtual-hwe-16.04-edge, linux-raspi2, linux-image-raspi2, linux-image-4.15.0-1035-aws, linux-image-virtual, linux-image-4.15.0-1035-oem, linux-kvm, linux-oracle

Join the discussion

Need help with your security needs?

Ubuntu Pro provides up to ten-year security coverage for over 23,000 open-source packages within the Ubuntu Main and Universe repositories.

Talk to an expert to find out what would work best for you

Further reading