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USN-5485-1: Linux kernel vulnerabilities

17 June 2022

Several security issues were addressed in the Linux kernel.

Releases

Packages

Details

It was discovered that some Intel processors did not completely perform
cleanup actions on multi-core shared buffers. A local attacker could
possibly use this to expose sensitive information. (CVE-2022-21123)

It was discovered that some Intel processors did not completely perform
cleanup actions on microarchitectural fill buffers. A local attacker could
possibly use this to expose sensitive information. (CVE-2022-21125)

It was discovered that some Intel processors did not properly perform
cleanup during specific special register write operations. A local attacker
could possibly use this to expose sensitive information. (CVE-2022-21166)

Update instructions

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

Ubuntu 22.04
Ubuntu 21.10
Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04
Ubuntu 14.04

Please note that fully mitigating processor vulnerabilities requires
corresponding processor microcode/firmware updates.

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-5484-1: linux-headers-generic-lts-trusty, linux-hwe-virtual-trusty, linux-generic-lts-quantal, linux-image-omap, linux-image-generic-lts-trusty, linux-image-extra-virtual, linux-headers-generic-lpae-lts-saucy, linux-image-3.13.0-190-generic-lpae, linux-tools-common, linux-headers-generic-lts-saucy, linux-modules-3.13.0-190-lowlatency, linux-tools-generic-lpae-lts-saucy, linux-image-hwe-generic-trusty, linux-lowlatency, linux-signed-image-generic-lts-saucy, linux, linux-modules-extra-3.13.0-190-generic, linux-crashdump, linux-image-highbank, linux-tools-generic-lpae, linux-highbank, linux-signed-image-generic, linux-image-3.13.0-190-lowlatency, linux-tools-generic-lpae-lts-trusty, linux-buildinfo-3.13.0-190-lowlatency, linux-generic-lts-quantal-eol-upgrade, linux-tools-generic-lts-saucy, linux-signed-image-generic-lts-raring, linux-headers-generic-pae, linux-tools-generic, linux-signed-generic-lts-saucy, linux-signed-generic-lts-raring-eol-upgrade, linux-tools-virtual, linux-headers-3.13.0-190-generic, linux-signed-image-generic-lts-quantal, linux-generic-lpae, linux-headers-server, linux-image-lowlatency, linux-doc, linux-tools-3.13.0-190-generic-lpae, linux-headers-generic-lts-raring, linux-signed-generic, linux-generic-lts-saucy-eol-upgrade, linux-image-generic-lts-quantal, linux-headers-3.13.0-190-lowlatency, linux-headers-lowlatency-pae, linux-generic-lpae-lts-trusty, linux-lowlatency-pae, linux-generic-lts-raring-eol-upgrade, linux-image-generic-lpae, linux-hwe-generic-trusty, linux-source-3.13.0, linux-tools-3.13.0-190, linux-cloud-tools-lowlatency, linux-tools-lts-raring, linux-modules-3.13.0-190-generic-lpae, linux-headers-generic-lpae-lts-trusty, linux-signed-image-generic-lts-trusty, linux-generic-lpae-lts-saucy-eol-upgrade, linux-signed-generic-lts-saucy-eol-upgrade, linux-headers-highbank, linux-signed-generic-lts-raring, linux-source, linux-cloud-tools-3.13.0-190-generic, linux-generic-lts-saucy, linux-headers-virtual, linux-image-generic-lpae-lts-trusty, linux-headers-generic, hv-kvp-daemon-init, linux-generic-lts-trusty, linux-image-generic, linux-image-hwe-virtual-trusty, linux-cloud-tools-common, linux-tools-lts-trusty, linux-cloud-tools-3.13.0-190, linux-headers-generic-lpae, linux-cloud-tools-generic, linux-image-lowlatency-pae, linux-headers-generic-lts-quantal, linux-tools-3.13.0-190-generic, linux-image-3.13.0-190-generic, linux-tools-lts-saucy, linux-headers-lowlatency, linux-image-generic-lts-raring, linux-cloud-tools-3.13.0-190-lowlatency, linux-image-generic-pae, linux-generic-lts-raring, linux-image-unsigned-3.13.0-190-generic, linux-image-virtual, linux-server, linux-image-generic-lts-saucy, linux-signed-generic-lts-trusty, linux-image-generic-lpae-lts-saucy, linux-generic-pae, linux-generic, linux-virtual, linux-signed-generic-lts-quantal-eol-upgrade, linux-buildinfo-3.13.0-190-generic-lpae, linux-headers-omap, linux-buildinfo-3.13.0-190-generic, linux-libc-dev, linux-tools-generic-lts-trusty, linux-cloud-tools-virtual, linux-omap, linux-tools-lts-quantal, linux-modules-3.13.0-190-generic, linux-headers-3.13.0-190-generic-lpae, linux-image-unsigned-3.13.0-190-lowlatency, linux-generic-lpae-lts-saucy, linux-signed-generic-lts-quantal, linux-image-server, linux-tools-3.13.0-190-lowlatency, linux-tools-lowlatency, linux-headers-3.13.0-190
  • USN-5486-1: intel-microcode
  • USN-5485-2: linux-headers-oem-20.04c, linux-image-5.14.0-1044-oem, linux-image-oem-20.04c, linux-image-oem-20.04d, linux-oem-20.04c, linux-image-oem-20.04b, linux-tools-oem-20.04, linux-tools-oem-20.04b, linux-oem-20.04d, linux-buildinfo-5.14.0-1044-oem, linux-image-oem-20.04, linux-tools-5.14.0-1044-oem, linux-oem-5.14-tools-5.14.0-1044, linux-headers-oem-20.04b, linux-tools-oem-20.04c, linux-oem-5.14-headers-5.14.0-1044, linux-oem-5.14, linux-oem-20.04, linux-headers-5.14.0-1044-oem, linux-modules-iwlwifi-oem-20.04, linux-oem-20.04b, linux-modules-5.14.0-1044-oem, linux-modules-iwlwifi-oem-20.04d, linux-headers-oem-20.04, linux-modules-iwlwifi-5.14.0-1044-oem, linux-oem-5.14-tools-host, linux-headers-oem-20.04d, linux-image-unsigned-5.14.0-1044-oem, linux-tools-oem-20.04d
  • USN-5505-1: linux-lts-xenial-cloud-tools-4.4.0-229, linux-tools-generic-lts-xenial, linux-image-lowlatency-lts-xenial, linux-cloud-tools-virtual-lts-xenial, linux-kvm-cloud-tools-4.4.0-1110, linux-modules-4.4.0-229-generic, linux-lowlatency-lts-xenial, linux-image-4.4.0-1110-kvm, linux-image-unsigned-4.4.0-229-lowlatency, linux-image-4.4.0-229-lowlatency, linux-signed-generic-lts-xenial, linux-modules-4.4.0-1110-kvm, linux-headers-4.4.0-229-generic, linux-cloud-tools-generic-lts-xenial, linux-generic-lts-xenial, linux-buildinfo-4.4.0-1110-kvm, linux-image-virtual-lts-xenial, linux-tools-kvm, linux-kvm-headers-4.4.0-1110, linux-signed-image-lowlatency-lts-xenial, linux-image-unsigned-4.4.0-229-generic, linux-lts-xenial-tools-4.4.0-229, linux-buildinfo-4.4.0-229-generic, linux-signed-image-generic-lts-xenial, linux-kvm-tools-4.4.0-1110, linux-kvm, linux-buildinfo-4.4.0-229-lowlatency, linux-cloud-tools-lowlatency-lts-xenial, linux-virtual-lts-xenial, linux-modules-4.4.0-229-lowlatency, linux-tools-lowlatency-lts-xenial, linux-tools-4.4.0-229-generic, linux-headers-4.4.0-229-lowlatency, linux-tools-4.4.0-1110-kvm, linux-headers-kvm, linux-modules-extra-4.4.0-229-generic, linux-signed-lowlatency-lts-xenial, linux-headers-lowlatency-lts-xenial, linux-headers-4.4.0-1110-kvm, linux-headers-4.4.0-229, linux-cloud-tools-4.4.0-1110-kvm, linux-headers-generic-lts-xenial, linux-cloud-tools-4.4.0-229-lowlatency, linux-image-4.4.0-229-generic, linux-image-extra-virtual-lts-xenial, linux-lts-xenial, linux-tools-virtual-lts-xenial, linux-tools-4.4.0-229-lowlatency, linux-headers-virtual-lts-xenial, linux-image-generic-lts-xenial, linux-cloud-tools-4.4.0-229-generic, linux-image-kvm
  • USN-5513-1: linux-headers-4.4.0-1109-aws, linux-image-4.4.0-1109-aws, linux-tools-4.4.0-1109-aws, linux-aws-tools-4.4.0-1109, linux-headers-aws, linux-cloud-tools-4.4.0-1109-aws, linux-buildinfo-4.4.0-1109-aws, linux-aws-headers-4.4.0-1109, linux-image-aws, linux-tools-aws, linux-aws-cloud-tools-4.4.0-1109, linux-aws, linux-modules-4.4.0-1109-aws
  • USN-5529-1: linux-headers-oem-22.04a, linux-oem-22.04a, linux-modules-iwlwifi-oem-22.04a, linux-image-unsigned-5.17.0-1013-oem, linux-headers-oem-22.04, linux-buildinfo-5.17.0-1013-oem, linux-image-oem-22.04, linux-tools-oem-22.04a, linux-headers-5.17.0-1013-oem, linux-tools-oem-22.04, linux-modules-iwlwifi-5.17.0-1013-oem, linux-tools-5.17.0-1013-oem, linux-image-5.17.0-1013-oem, linux-oem-5.17, linux-oem-5.17-headers-5.17.0-1013, linux-modules-5.17.0-1013-oem, linux-modules-iwlwifi-oem-22.04, linux-oem-5.17-tools-5.17.0-1013, linux-oem-22.04, linux-oem-5.17-tools-host, linux-image-oem-22.04a
  • USN-5535-1: intel-microcode