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USN-5384-1: Linux kernel vulnerabilities

20 April 2022

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

It was discovered that the UDF file system implementation in the Linux
kernel could attempt to dereference a null pointer in some situations. An
attacker could use this to construct a malicious UDF image that, when
mounted and operated on, could cause a denial of service (system crash).
(CVE-2022-0617)

Lyu Tao discovered that the NFS implementation in the Linux kernel did not
properly handle requests to open a directory on a regular file. A local
attacker could use this to expose sensitive information (kernel memory).
(CVE-2022-24448)

It was discovered that the YAM AX.25 device driver in the Linux kernel did
not properly deallocate memory in some error conditions. A local privileged
attacker could use this to cause a denial of service (kernel memory
exhaustion). (CVE-2022-24959)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 20.04
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.

Related notices

  • USN-5302-1: linux-headers-oem-20.04d, linux-tools-oem-20.04, linux-oem-20.04c, linux-oem-20.04d, linux-image-oem-20.04b, linux-oem-20.04, linux-oem-20.04b, linux-tools-oem-20.04d, linux-image-oem-20.04c, linux-oem-5.14-tools-5.14.0-1024, linux-image-5.14.0-1024-oem, linux-image-oem-20.04, linux-image-oem-20.04d, linux-buildinfo-5.14.0-1024-oem, linux-headers-5.14.0-1024-oem, linux-headers-oem-20.04c, linux-oem-5.14-tools-host, linux-modules-5.14.0-1024-oem, linux-tools-5.14.0-1024-oem, linux-tools-oem-20.04b, linux-image-unsigned-5.14.0-1024-oem, linux-headers-oem-20.04, linux-headers-oem-20.04b, linux-tools-oem-20.04c, linux-oem-5.14, linux-oem-5.14-headers-5.14.0-1024
  • USN-5383-1: linux-modules-5.13.0-40-lowlatency, linux-modules-extra-5.13.0-40-generic, linux-aws-headers-5.13.0-1022, linux-source-5.13.0, linux-image-5.13.0-40-lowlatency, linux-tools-lowlatency, linux-tools-virtual-hwe-20.04-edge, linux-headers-5.13.0-40-generic, linux-libc-dev, linux-modules-extra-5.13.0-1011-intel, linux-tools-oem-20.04, linux-headers-raspi, linux-headers-generic-lpae, linux-buildinfo-5.13.0-40-generic-64k, linux-modules-5.13.0-1021-kvm, linux-intel-5.13-tools-host, linux-oem-20.04, linux-tools-generic-hwe-20.04, linux-hwe-5.13-headers-5.13.0-40, linux-aws-5.13, linux-headers-generic-64k-hwe-20.04-edge, linux-intel-5.13-tools-5.13.0-1011, linux-modules-5.13.0-40-generic, linux-modules-extra-5.13.0-1025-raspi, linux-tools-generic-lpae-hwe-20.04, linux-cloud-tools-lowlatency-hwe-20.04-edge, linux-gcp-5.13-tools-5.13.0-1024, linux-headers-5.13.0-1021-kvm, linux-headers-generic-lpae-hwe-20.04, linux-raspi-tools-5.13.0-1025, linux-oracle-5.13-tools-5.13.0-1027, linux-gcp, linux-lowlatency-hwe-20.04, linux-modules-extra-aws-edge, linux-headers-gke, linux-modules-extra-5.13.0-1024-gcp, linux-modules-extra-gcp, linux-tools-5.13.0-1021-kvm, linux-generic-lpae-hwe-20.04-edge, linux-modules-5.13.0-40-generic-64k, linux-image-5.13.0-1011-intel, linux-image-5.13.0-40-generic-lpae, linux-headers-aws-edge, linux-image-generic-lpae, linux-image-unsigned-5.13.0-1022-aws, linux-tools-5.13.0-1025-raspi, linux-tools-virtual, linux-image-gcp, linux-image-aws, linux-generic-lpae, linux-headers-oracle-edge, linux-generic-64k-hwe-20.04-edge, linux-intel-5.13-headers-5.13.0-1011, linux-image-5.13.0-40-generic, linux-tools-5.13.0-40-lowlatency, linux-azure-cloud-tools-5.13.0-1022, linux-modules-5.13.0-1025-raspi-nolpae, linux-kvm-headers-5.13.0-1021, linux-cloud-tools-lowlatency-hwe-20.04, linux-headers-virtual-hwe-20.04-edge, linux-tools-generic-64k-hwe-20.04-edge, linux-tools-generic-hwe-20.04-edge, linux-azure-5.13-headers-5.13.0-1022, linux-tools-aws-edge, linux-buildinfo-5.13.0-1025-raspi-nolpae, linux-kvm-tools-5.13.0-1021, linux-image-azure-edge, linux-headers-lowlatency, linux-headers-5.13.0-40-generic-lpae, linux-image-lowlatency-hwe-20.04-edge, linux-image-raspi, linux-tools-virtual-hwe-20.04, linux-cloud-tools-generic, linux-tools-azure-edge, linux-generic-64k-hwe-20.04, linux-doc, linux-image-5.13.0-1025-raspi, linux-gke, linux-image-virtual-hwe-20.04, linux, linux-intel-5.13-source-5.13.0, linux-oracle-5.13-headers-5.13.0-1027, linux-tools-generic-64k, linux-cloud-tools-5.13.0-1022-aws, linux-image-generic-lpae-hwe-20.04-edge, linux-azure-5.13, linux-intel, linux-headers-generic-hwe-20.04-edge, linux-headers-generic-lpae-hwe-20.04-edge, linux-image-5.13.0-1025-raspi-nolpae, linux-headers-azure, linux-cloud-tools-5.13.0-1022-azure, linux-tools-oracle, linux-headers-5.13.0-1024-gcp, linux-image-generic-hwe-20.04, linux-image-azure, linux-intel-5.13-tools-common, linux-kvm, linux-modules-extra-azure-edge, linux-oracle-tools-5.13.0-1027, linux-modules-extra-aws, linux-aws, linux-aws-tools-5.13.0-1022, linux-cloud-tools-5.13.0-40-generic, linux-cloud-tools-5.13.0-40-lowlatency, linux-cloud-tools-virtual-hwe-20.04, linux-lowlatency, linux-modules-extra-5.13.0-1025-raspi-nolpae, linux-tools-5.13.0-40-generic-64k, linux-generic-hwe-20.04, linux-tools-host, linux-image-unsigned-5.13.0-40-generic-64k, linux-tools-raspi, linux-image-unsigned-5.13.0-1021-kvm, linux-aws-edge, linux-image-5.13.0-1022-aws, linux-headers-oracle, linux-buildinfo-5.13.0-1021-kvm, linux-tools-5.13.0-1025-raspi-nolpae, linux-cloud-tools-azure, linux-gcp-5.13, linux-virtual-hwe-20.04, linux-gcp-headers-5.13.0-1024, linux-headers-generic-64k-hwe-20.04, linux-tools-5.13.0-1024-gcp, linux-image-5.13.0-1024-gcp, linux-azure-5.13-tools-5.13.0-1022, linux-image-oracle-edge, linux-image-unsigned-5.13.0-1024-gcp, linux-modules-extra-5.13.0-1022-aws, linux-raspi, linux-cloud-tools-5.13.0-1011-intel, linux-image-5.13.0-1021-kvm, linux-aws-5.13-cloud-tools-5.13.0-1022, linux-tools-gcp, linux-aws-5.13-tools-5.13.0-1022, linux-intel-5.13-cloud-tools-5.13.0-1011, linux-oracle, linux-hwe-5.13-cloud-tools-common, linux-modules-5.13.0-1022-azure, linux-headers-5.13.0-1027-oracle, linux-gcp-edge, linux-headers-generic-64k, linux-image-generic-64k, linux-raspi-headers-5.13.0-1025, linux-image-generic-64k-hwe-20.04-edge, linux-cloud-tools-common, linux-headers-5.13.0-40-lowlatency, linux-image-unsigned-5.13.0-40-generic, linux-modules-5.13.0-1027-oracle, linux-generic, linux-modules-5.13.0-1024-gcp, linux-tools-5.13.0-1027-oracle, linux-buildinfo-5.13.0-40-generic, linux-cloud-tools-virtual-hwe-20.04-edge, linux-tools-5.13.0-1011-intel, linux-buildinfo-5.13.0-40-generic-lpae, linux-hwe-5.13-tools-5.13.0-40, linux-modules-5.13.0-40-generic-lpae, linux-tools-gcp-edge, linux-headers-virtual-hwe-20.04, linux-tools-5.13.0-1022-aws, linux-headers-azure-edge, linux-image-generic, linux-tools-common, linux-buildinfo-5.13.0-1022-aws, linux-headers-5.13.0-1011-intel, linux-modules-extra-gcp-edge, linux-oracle-headers-5.13.0-1027, linux-headers-lowlatency-hwe-20.04-edge, linux-tools-azure, linux-image-extra-virtual, linux-headers-5.13.0-1025-raspi, linux-cloud-tools-azure-edge, linux-headers-5.13.0-1022-azure, linux-cloud-tools-virtual, linux-tools-5.13.0-40-generic-lpae, linux-virtual-hwe-20.04-edge, linux-image-generic-lpae-hwe-20.04, linux-modules-extra-azure, linux-tools-oracle-edge, linux-source, linux-aws-5.13-headers-5.13.0-1022, linux-cloud-tools-generic-hwe-20.04, linux-image-generic-hwe-20.04-edge, linux-image-oracle, linux-tools-aws, linux-hwe-5.13-cloud-tools-5.13.0-40, linux-cloud-tools-lowlatency, linux-image-unsigned-5.13.0-1011-intel, linux-tools-gke, linux-image-gcp-edge, linux-tools-kvm, linux-image-virtual-hwe-20.04-edge, linux-hwe-5.13-tools-host, linux-tools-5.13.0-40-generic, linux-azure, linux-headers-generic-hwe-20.04, linux-tools-raspi-nolpae, linux-image-unsigned-5.13.0-40-lowlatency, linux-buildinfo-5.13.0-1011-intel, linux-modules-5.13.0-1011-intel, linux-generic-hwe-20.04-edge, linux-buildinfo-5.13.0-1022-azure, linux-image-extra-virtual-hwe-20.04, linux-image-intel, linux-headers-5.13.0-40-generic-64k, linux-headers-aws, linux-image-5.13.0-1022-azure, linux-image-gke, linux-image-aws-edge, linux-raspi-nolpae, linux-headers-raspi-nolpae, linux-buildinfo-5.13.0-1024-gcp, linux-image-unsigned-5.13.0-1027-oracle, linux-headers-5.13.0-1025-raspi-nolpae, linux-image-5.13.0-1027-oracle, linux-azure-headers-5.13.0-1022, linux-intel-5.13-cloud-tools-common, linux-headers-generic, linux-tools-generic, linux-image-extra-virtual-hwe-20.04-edge, linux-aws-cloud-tools-5.13.0-1022, linux-tools-lowlatency-hwe-20.04-edge, linux-oracle-edge, linux-image-5.13.0-40-generic-64k, linux-hwe-5.13-tools-common, linux-buildinfo-5.13.0-1027-oracle, linux-image-oem-20.04, linux-image-kvm, linux-lowlatency-hwe-20.04-edge, linux-cloud-tools-5.13.0-40, linux-virtual, linux-headers-5.13.0-40, linux-gcp-5.13-headers-5.13.0-1024, linux-image-raspi-nolpae, linux-modules-extra-gke, linux-headers-gcp, linux-modules-5.13.0-1022-aws, linux-tools-generic-lpae, linux-image-generic-64k-hwe-20.04, linux-tools-lowlatency-hwe-20.04, linux-buildinfo-5.13.0-40-lowlatency, linux-tools-generic-64k-hwe-20.04, linux-image-lowlatency-hwe-20.04, linux-azure-tools-5.13.0-1022, linux-tools-5.13.0-1022-azure, linux-hwe-5.13, linux-generic-lpae-hwe-20.04, linux-modules-5.13.0-1025-raspi, linux-intel-5.13, linux-headers-oem-20.04, linux-buildinfo-5.13.0-1025-raspi, linux-tools-intel, linux-crashdump, linux-image-lowlatency, linux-headers-virtual, linux-hwe-5.13-source-5.13.0, linux-modules-extra-5.13.0-1027-oracle, linux-oracle-5.13, linux-tools-generic-lpae-hwe-20.04-edge, linux-modules-extra-raspi, linux-cloud-tools-generic-hwe-20.04-edge, linux-headers-5.13.0-1022-aws, linux-modules-extra-raspi-nolpae, linux-generic-64k, linux-gcp-tools-5.13.0-1024, linux-headers-intel, linux-headers-kvm, linux-headers-lowlatency-hwe-20.04, linux-azure-5.13-cloud-tools-5.13.0-1022, linux-headers-gcp-edge, linux-image-unsigned-5.13.0-1022-azure, linux-tools-5.13.0-40, linux-modules-extra-5.13.0-1022-azure, linux-image-virtual, linux-azure-edge, linux-cloud-tools-intel
  • USN-5385-1: linux-buildinfo-4.15.0-1126-snapdragon, linux-image-aws-hwe, linux-gcp-headers-4.15.0-1121, linux-signed-lowlatency-hwe-16.04, linux-tools-lowlatency, linux-tools-virtual-hwe-16.04-edge, linux-headers-aws-lts-18.04, linux-libc-dev, linux-signed-image-lowlatency-hwe-16.04, linux-image-unsigned-4.15.0-1137-azure, linux-headers-generic-lpae, linux-signed-lowlatency-hwe-16.04-edge, linux-image-4.15.0-1127-aws-hwe, linux-cloud-tools-4.15.0-1127-aws, linux-signed-oracle-lts-18.04, linux-modules-4.15.0-176-lowlatency, linux-headers-dell300x, linux-modules-4.15.0-1092-oracle, linux-dell300x-headers-4.15.0-1041, linux-oracle-tools-4.15.0-1092, linux-tools-lowlatency-hwe-16.04, linux-signed-image-azure, linux-tools-generic-hwe-16.04-edge, linux-snapdragon-tools-4.15.0-1126, linux-image-generic-lpae-hwe-16.04, linux-gcp, linux-generic-hwe-16.04-edge, linux-headers-gke, linux-modules-extra-gcp, linux-buildinfo-4.15.0-176-lowlatency, linux-generic-hwe-16.04, linux-image-generic-lpae, linux-signed-image-generic-hwe-16.04, linux-cloud-tools-azure-lts-18.04, linux-modules-4.15.0-1126-snapdragon, linux-tools-virtual, linux-image-extra-virtual-hwe-16.04-edge, linux-image-gcp, linux-image-unsigned-4.15.0-1041-dell300x, linux-generic-lpae, linux-headers-virtual-hwe-16.04, linux-image-oem, linux-gcp-4.15, linux-gcp-4.15-tools-4.15.0-1121, linux-gcp-4.15-headers-4.15.0-1121, linux-image-4.15.0-1121-gcp, linux-image-virtual-hwe-16.04-edge, linux-tools-4.15.0-1127-aws, linux-tools-gcp-lts-18.04, linux-cloud-tools-lowlatency-hwe-16.04-edge, linux-headers-4.15.0-176-generic, linux-headers-oracle-lts-18.04, linux-cloud-tools-4.15.0-176-lowlatency, linux-image-azure-edge, linux-headers-lowlatency, linux-modules-4.15.0-176-generic-lpae, linux-hwe-tools-4.15.0-176, linux-cloud-tools-generic, linux-tools-azure-edge, linux-image-extra-virtual-hwe-16.04, linux-doc, linux-image-oracle-lts-18.04, linux-gke, linux, linux-image-4.15.0-176-generic, linux-headers-gcp-lts-18.04, linux-aws-lts-18.04, linux-tools-4.15.0-1113-kvm, linux-kvm-tools-4.15.0-1113, linux-signed-generic-hwe-16.04, linux-image-aws-lts-18.04, linux-buildinfo-4.15.0-1127-aws, linux-image-4.15.0-1092-oracle, linux-headers-azure, linux-headers-4.15.0-1041-dell300x, linux-oracle-headers-4.15.0-1092, linux-headers-virtual-hwe-16.04-edge, linux-signed-azure-lts-18.04, linux-azure-4.15-cloud-tools-4.15.0-1137, linux-headers-4.15.0-176, linux-tools-oracle, linux-oem, linux-image-azure, linux-signed-azure-edge, linux-modules-extra-azure-edge, linux-kvm, linux-aws-hwe-tools-4.15.0-1127, linux-signed-lowlatency, linux-aws, linux-lowlatency, linux-cloud-tools-generic-hwe-16.04-edge, linux-signed-image-oem, linux-tools-host, linux-tools-generic-lpae-hwe-16.04-edge, linux-modules-extra-4.15.0-1127-aws, linux-headers-lowlatency-hwe-16.04-edge, linux-azure-lts-18.04, linux-dell300x, linux-aws-edge, linux-cloud-tools-virtual-hwe-16.04-edge, linux-tools-dell300x, linux-snapdragon, linux-headers-oracle, linux-snapdragon-headers-4.15.0-1126, linux-signed-image-lowlatency, linux-cloud-tools-azure, linux-modules-extra-4.15.0-1121-gcp, linux-aws-cloud-tools-4.15.0-1127, linux-image-generic-hwe-16.04-edge, linux-headers-4.15.0-1127-aws, linux-headers-4.15.0-1126-snapdragon, linux-modules-4.15.0-1127-aws, linux-modules-extra-azure-lts-18.04, linux-image-4.15.0-1113-kvm, linux-tools-4.15.0-1126-snapdragon, linux-modules-4.15.0-1041-dell300x, linux-tools-4.15.0-176-generic-lpae, linux-tools-gcp, linux-dell300x-tools-4.15.0-1041, linux-image-4.15.0-1041-dell300x, linux-headers-generic-hwe-16.04-edge, linux-oracle, linux-signed-oracle, linux-tools-lowlatency-hwe-16.04-edge, linux-generic-lpae-hwe-16.04, linux-aws-headers-4.15.0-1127, linux-tools-4.15.0-1137-azure, linux-cloud-tools-lowlatency-hwe-16.04, linux-signed-image-generic, linux-modules-extra-aws-lts-18.04, linux-cloud-tools-common, linux-headers-4.15.0-1092-oracle, linux-buildinfo-4.15.0-1121-gcp, linux-signed-generic, linux-gcp-lts-18.04, linux-azure-4.15-tools-4.15.0-1137, linux-generic, linux-image-unsigned-4.15.0-176-lowlatency, linux-image-4.15.0-1126-snapdragon, linux-modules-4.15.0-1137-azure, linux-tools-azure-lts-18.04, linux-source-4.15.0, linux-cloud-tools-4.15.0-1137-azure, linux-cloud-tools-generic-hwe-16.04, linux-tools-virtual-hwe-16.04, linux-image-4.15.0-1127-aws, linux-headers-generic-hwe-16.04, linux-lowlatency-hwe-16.04, linux-headers-azure-edge, linux-image-generic, linux-headers-lowlatency-hwe-16.04, linux-image-unsigned-4.15.0-1127-aws, linux-tools-common, linux-tools-4.15.0-176, linux-tools-azure, linux-virtual-hwe-16.04-edge, linux-image-extra-virtual, linux-buildinfo-4.15.0-1092-oracle, linux-tools-4.15.0-176-generic, linux-headers-generic-lpae-hwe-16.04-edge, linux-image-lowlatency-hwe-16.04-edge, linux-tools-oem, linux-image-generic-lpae-hwe-16.04-edge, linux-cloud-tools-azure-edge, linux-modules-extra-4.15.0-1137-azure, linux-cloud-tools-virtual, linux-headers-4.15.0-1121-gcp, linux-azure-4.15-headers-4.15.0-1137, linux-kvm-headers-4.15.0-1113, linux-modules-extra-azure, linux-source, linux-image-azure-lts-18.04, linux-image-generic-hwe-16.04, linux-image-oracle, linux-signed-generic-hwe-16.04-edge, linux-cloud-tools-4.15.0-176, linux-cloud-tools-lowlatency, linux-signed-image-lowlatency-hwe-16.04-edge, linux-tools-gke, linux-image-dell300x, linux-tools-kvm, linux-image-snapdragon, linux-headers-4.15.0-176-generic-lpae, linux-azure, linux-aws-hwe, linux-signed-image-azure-edge, linux-headers-snapdragon, linux-buildinfo-4.15.0-1113-kvm, linux-lowlatency-hwe-16.04-edge, linux-virtual-hwe-16.04, linux-image-unsigned-4.15.0-1092-oracle, linux-tools-4.15.0-176-lowlatency, linux-buildinfo-4.15.0-176-generic, linux-tools-aws-hwe, linux-image-gke, linux-cloud-tools-virtual-hwe-16.04, linux-image-virtual-hwe-16.04, linux-signed-image-oracle-lts-18.04, linux-image-4.15.0-176-generic-lpae, linux-headers-4.15.0-1113-kvm, linux-azure-4.15, linux-modules-4.15.0-1113-kvm, linux-cloud-tools-4.15.0-176-generic, linux-generic-lpae-hwe-16.04-edge, linux-azure-cloud-tools-4.15.0-1137, linux-headers-aws-hwe, linux-headers-generic, linux-image-gcp-lts-18.04, linux-tools-generic, linux-tools-snapdragon, linux-tools-aws-lts-18.04, linux-headers-generic-lpae-hwe-16.04, linux-headers-oem, linux-modules-4.15.0-1121-gcp, linux-aws-hwe-cloud-tools-4.15.0-1127, linux-headers-azure-lts-18.04, linux-image-kvm, linux-tools-4.15.0-1121-gcp, linux-aws-tools-4.15.0-1127, linux-headers-4.15.0-1137-azure, linux-oracle-lts-18.04, linux-tools-generic-hwe-16.04, linux-modules-extra-4.15.0-1092-oracle, linux-azure-tools-4.15.0-1137, linux-virtual, linux-modules-extra-gke, linux-image-unsigned-4.15.0-1121-gcp, linux-tools-oracle-lts-18.04, linux-headers-gcp, linux-tools-generic-lpae, linux-signed-image-generic-hwe-16.04-edge, linux-hwe, linux-tools-4.15.0-1092-oracle, linux-modules-4.15.0-176-generic, linux-signed-image-azure-lts-18.04, linux-modules-extra-4.15.0-176-generic, linux-signed-image-oracle, linux-hwe-cloud-tools-4.15.0-176, linux-tools-4.15.0-1041-dell300x, linux-image-unsigned-4.15.0-176-generic, linux-gcp-tools-4.15.0-1121, linux-image-4.15.0-176-lowlatency, linux-image-lowlatency-hwe-16.04, linux-crashdump, linux-image-lowlatency, linux-headers-virtual, linux-signed-oem, linux-tools-generic-lpae-hwe-16.04, linux-buildinfo-4.15.0-1041-dell300x, linux-headers-kvm, linux-signed-azure, linux-azure-headers-4.15.0-1137, linux-buildinfo-4.15.0-1137-azure, linux-headers-4.15.0-176-lowlatency, linux-modules-extra-aws-hwe, linux-buildinfo-4.15.0-176-generic-lpae, linux-modules-extra-gcp-lts-18.04, linux-image-virtual, linux-image-4.15.0-1137-azure, linux-azure-edge