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USN-5002-1: Linux kernel (HWE) vulnerability

23 June 2021

The system could be made to run programs as an administrator.

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

Norbert Slusarek discovered a race condition in the CAN BCM networking
protocol of the Linux kernel leading to multiple use-after-free
vulnerabilities. A local attacker could use this issue to execute arbitrary
code.

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 18.04

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-4997-1: linux-image-5.11.0-1010-oracle, linux-image-raspi, linux-image-5.11.0-22-lowlatency, linux-image-generic-hwe-20.04, linux-image-5.11.0-1011-gcp, linux-image-5.11.0-1012-raspi-nolpae, linux-image-generic-lpae-hwe-20.04-edge, linux-image-lowlatency, linux-image-generic-64k-hwe-20.04, linux-aws, linux-oracle, linux-image-generic-lpae, linux-image-oracle, linux, linux-image-aws, linux-image-generic-64k, linux-image-generic-hwe-20.04-edge, linux-image-virtual-hwe-20.04, linux-image-5.11.0-22-generic-lpae, linux-raspi, linux-image-5.11.0-1011-aws, linux-image-5.11.0-22-generic, linux-image-gke, linux-image-lowlatency-hwe-20.04-edge, linux-image-virtual-hwe-20.04-edge, linux-image-generic-lpae-hwe-20.04, linux-image-virtual, linux-azure, linux-image-azure, linux-gcp, linux-image-oem-20.04, linux-image-generic-64k-hwe-20.04-edge, linux-image-5.11.0-22-generic-64k, linux-image-gcp, linux-image-5.11.0-1012-raspi, linux-image-lowlatency-hwe-20.04, linux-image-raspi-nolpae, linux-image-5.11.0-1009-azure, linux-image-generic
  • USN-4999-1: linux-image-5.8.0-59-generic, linux-hwe-5.8, linux-image-raspi, linux-image-generic-hwe-20.04, linux-aws-5.8, linux-image-5.8.0-1035-gcp, linux-image-generic-lpae-hwe-20.04-edge, linux-image-lowlatency, linux-gcp-5.8, linux-image-5.8.0-1030-kvm, linux-image-generic-64k-hwe-20.04, linux-aws, linux-oracle, linux-image-generic-lpae, linux-image-oracle, linux, linux-image-aws, linux-image-generic-64k, linux-image-generic-hwe-20.04-edge, linux-image-virtual-hwe-20.04, linux-image-5.8.0-59-generic-64k, linux-raspi, linux-image-5.8.0-1029-raspi-nolpae, linux-oracle-5.8, linux-azure-5.8, linux-kvm, linux-image-5.8.0-59-generic-lpae, linux-image-5.8.0-59-lowlatency, linux-image-gke, linux-image-5.8.0-1033-oracle, linux-image-lowlatency-hwe-20.04-edge, linux-image-virtual-hwe-20.04-edge, linux-image-generic-lpae-hwe-20.04, linux-image-gcp-edge, linux-image-virtual, linux-azure, linux-image-azure, linux-gcp, linux-image-5.8.0-1036-azure, linux-image-5.8.0-1029-raspi, linux-image-oem-20.04, linux-image-generic-64k-hwe-20.04-edge, linux-image-lowlatency-hwe-20.04, linux-image-gcp, linux-image-oracle-edge, linux-image-5.8.0-1038-aws, linux-image-raspi-nolpae, linux-image-kvm, linux-image-azure-edge, linux-image-generic
  • USN-5000-1: linux-hwe-5.4, linux-gke-5.4, linux-image-5.4.0-1051-aws, linux-image-raspi, linux-image-virtual-hwe-18.04, linux-image-5.4.0-1046-gcp, linux-image-generic-lpae-hwe-18.04, linux-image-snapdragon-hwe-18.04-edge, linux-raspi-5.4, linux-gke, linux-image-oem, linux-image-raspi-hwe-18.04, linux-image-5.4.0-77-lowlatency, linux-image-generic-hwe-18.04-edge, linux-image-oem-osp1, linux-image-lowlatency, linux-image-generic-hwe-18.04, linux-aws, linux-image-5.4.0-1046-gke, linux-image-aws-lts-20.04, linux-image-oracle-lts-20.04, linux-oracle, linux-gcp-5.4, linux-image-lowlatency-hwe-18.04, linux-image-5.4.0-1048-oracle, linux-image-5.4.0-1051-azure, linux-image-aws-edge, linux, linux-image-aws, linux-image-generic-lpae, linux-image-oracle, linux-azure-5.4, linux-image-gke-5.4, linux-raspi, linux-oracle-5.4, linux-image-azure-lts-20.04, linux-image-snapdragon-hwe-18.04, linux-image-5.4.0-1038-raspi, linux-image-gke, linux-image-5.4.0-77-generic-lpae, linux-image-gcp-lts-20.04, linux-image-raspi2, linux-gkeop-5.4, linux-image-virtual, linux-image-gcp-edge, linux-azure, linux-image-azure, linux-gcp, linux-image-5.4.0-77-generic, linux-aws-5.4, linux-image-generic-lpae-hwe-18.04-edge, linux-image-lowlatency-hwe-18.04-edge, linux-image-raspi2-hwe-18.04, linux-image-raspi2-hwe-18.04-edge, linux-image-gkeop, linux-image-gcp, linux-image-virtual-hwe-18.04-edge, linux-image-oracle-edge, linux-image-raspi-hwe-18.04-edge, linux-image-gkeop-5.4, linux-image-azure-edge, linux-gkeop, linux-image-5.4.0-1018-gkeop, linux-image-generic
  • USN-5001-1: linux-image-oem-20.04, linux-image-oem-20.04b, linux-image-oem-20.04-edge, linux-image-5.10.0-1033-oem, linux-oem-5.10
  • USN-5003-1: linux-snapdragon, linux-image-4.15.0-147-generic-lpae, linux-hwe, linux-image-generic-lpae-hwe-16.04-edge, linux-image-dell300x, linux-image-snapdragon, linux-image-4.15.0-1089-raspi2, linux-azure-4.15, linux-image-virtual-hwe-16.04-edge, linux-image-4.15.0-1118-azure, linux-image-oem, linux-aws-hwe, linux-image-4.15.0-1106-snapdragon, linux-image-lowlatency, linux-image-lowlatency-hwe-16.04-edge, linux-image-generic-hwe-16.04-edge, linux-raspi2, linux-image-generic-hwe-16.04, linux-image-generic, linux-aws, linux-oracle, linux-image-4.15.0-1106-aws, linux-image-lowlatency-hwe-16.04, linux-image-generic-lpae-hwe-16.04, linux-image-aws-lts-18.04, linux-image-generic-lpae, linux-image-oracle, linux, linux-image-azure-lts-18.04, linux-image-virtual-hwe-16.04, linux-gcp-4.15, linux-image-4.15.0-147-lowlatency, linux-image-gke, linux-image-raspi2, linux-image-4.15.0-1075-oracle, linux-image-virtual, linux-azure, linux-image-azure, linux-dell300x, linux-gcp, linux-image-aws-hwe, linux-image-4.15.0-147-generic, linux-image-4.15.0-1103-gcp, linux-image-oracle-lts-18.04, linux-image-4.15.0-1022-dell300x, linux-image-gcp, linux-image-azure-edge, linux-image-gcp-lts-18.04
  • USN-5000-2: linux-buildinfo-5.4.0-1041-kvm, linux-tools-kvm, linux-image-unsigned-5.4.0-1041-kvm, linux-modules-5.4.0-1041-kvm, linux-kvm, linux-tools-5.4.0-1041-kvm, linux-kvm-headers-5.4.0-1041, linux-headers-5.4.0-1041-kvm, linux-kvm-tools-5.4.0-1041, linux-image-kvm, linux-headers-kvm, linux-image-5.4.0-1041-kvm
  • USN-4997-2: linux-headers-5.11.0-1009-kvm, linux-modules-5.11.0-1009-kvm, linux-tools-kvm, linux-buildinfo-5.11.0-1009-kvm, linux-kvm, linux-kvm-tools-5.11.0-1009, linux-image-unsigned-5.11.0-1009-kvm, linux-image-kvm, linux-image-5.11.0-1009-kvm, linux-headers-kvm, linux-tools-5.11.0-1009-kvm, linux-kvm-headers-5.11.0-1009
  • LSN-0078-1: generic-4.15, gke-5.4, gkeop, oem, lowlatency-4.15, generic-5.4, gke, gkeop-5.4, lowlatency-5.4, gcp, gke-4.15
  • USN-5082-1: linux-oem-5.13-tools-host, linux-oem-5.13-tools-5.13.0-1012, linux-image-5.13.0-1012-oem, linux-oem-5.13, linux-image-unsigned-5.13.0-1012-oem, linux-oem-5.13-headers-5.13.0-1012, linux-tools-oem-20.04c, linux-headers-oem-20.04c, linux-modules-5.13.0-1012-oem, linux-tools-5.13.0-1012-oem, linux-image-oem-20.04c, linux-buildinfo-5.13.0-1012-oem, linux-headers-5.13.0-1012-oem, linux-oem-20.04c
  • USN-5505-1: linux-signed-image-generic-lts-xenial, linux-tools-virtual-lts-xenial, linux-image-4.4.0-1110-kvm, linux-lts-xenial-tools-4.4.0-229, linux-image-4.4.0-229-lowlatency, linux-generic-lts-xenial, linux-lts-xenial, linux-modules-4.4.0-229-lowlatency, linux-tools-4.4.0-1110-kvm, linux-image-unsigned-4.4.0-229-generic, linux-image-extra-virtual-lts-xenial, linux-image-generic-lts-xenial, linux-image-4.4.0-229-generic, linux-modules-4.4.0-1110-kvm, linux-image-unsigned-4.4.0-229-lowlatency, linux-tools-kvm, linux-lts-xenial-cloud-tools-4.4.0-229, linux-signed-lowlatency-lts-xenial, linux-headers-4.4.0-1110-kvm, linux-cloud-tools-virtual-lts-xenial, linux-headers-4.4.0-229-lowlatency, linux-kvm-headers-4.4.0-1110, linux-headers-lowlatency-lts-xenial, linux-modules-extra-4.4.0-229-generic, linux-lowlatency-lts-xenial, linux-kvm-tools-4.4.0-1110, linux-tools-4.4.0-229-generic, linux-image-lowlatency-lts-xenial, linux-buildinfo-4.4.0-229-lowlatency, linux-image-virtual-lts-xenial, linux-headers-virtual-lts-xenial, linux-signed-image-lowlatency-lts-xenial, linux-cloud-tools-4.4.0-1110-kvm, linux-virtual-lts-xenial, linux-cloud-tools-lowlatency-lts-xenial, linux-kvm, linux-buildinfo-4.4.0-1110-kvm, linux-headers-4.4.0-229, linux-tools-generic-lts-xenial, linux-signed-generic-lts-xenial, linux-tools-4.4.0-229-lowlatency, linux-headers-generic-lts-xenial, linux-headers-kvm, linux-buildinfo-4.4.0-229-generic, linux-cloud-tools-4.4.0-229-lowlatency, linux-tools-lowlatency-lts-xenial, linux-headers-4.4.0-229-generic, linux-image-kvm, linux-kvm-cloud-tools-4.4.0-1110, linux-cloud-tools-generic-lts-xenial, linux-cloud-tools-4.4.0-229-generic, linux-modules-4.4.0-229-generic
  • USN-5513-1: linux-buildinfo-4.4.0-1109-aws, linux-cloud-tools-4.4.0-1109-aws, linux-aws-tools-4.4.0-1109, linux-headers-aws, linux-tools-4.4.0-1109-aws, linux-tools-aws, linux-image-4.4.0-1109-aws, linux-aws, linux-headers-4.4.0-1109-aws, linux-aws-cloud-tools-4.4.0-1109, linux-modules-4.4.0-1109-aws, linux-image-aws, linux-aws-headers-4.4.0-1109