1. Ubuntu Security Notices
  2. USN-5163-1

USN-5163-1: Linux kernel vulnerabilities

Publication date

30 November 2021

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux - Linux kernel
  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-aws-5.4 - Linux kernel for Amazon Web Services (AWS) systems
  • linux-azure - Linux kernel for Microsoft Azure Cloud systems
  • linux-azure-5.4 - Linux kernel for Microsoft Azure cloud systems
  • linux-bluefield - Linux kernel for NVIDIA BlueField platforms
  • linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-gcp-5.4 - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-gke - Linux kernel for Google Container Engine (GKE) systems
  • linux-gke-5.4 - Linux kernel for Google Container Engine (GKE) systems
  • linux-gkeop - Linux kernel for Google Container Engine (GKE) systems
  • linux-gkeop-5.4 - Linux kernel for Google Container Engine (GKE) systems
  • linux-hwe-5.4 - Linux hardware enablement (HWE) kernel
  • linux-ibm - Linux kernel for IBM cloud systems
  • linux-kvm - Linux kernel for cloud environments
  • linux-oracle - Linux kernel for Oracle Cloud systems
  • linux-oracle-5.4 - Linux kernel for Oracle Cloud systems
  • linux-raspi - Linux kernel for Raspberry Pi systems
  • linux-raspi-5.4 - Linux kernel for Raspberry Pi systems

Details

Ilja Van Sprundel discovered that the SCTP implementation in the Linux
kernel did not properly perform size validations on incoming packets in
some situations. An attacker could possibly use this to expose sensitive
information (kernel memory). (CVE-2021-3655)

It was discovered that the Option USB High Speed Mobile device driver in
the Linux kernel did not properly handle error conditions. A physically
proximate attacker could use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2021-37159)

It was discovered that the AMD Cryptographic Coprocessor (CCP) driver in
the Linux kernel did not properly deallocate memory in some error
conditions. A local attacker could use this to cause a denial of service
(memory exhaustion). (CVE-2021-3744,

Ilja Van Sprundel discovered that the SCTP implementation in the Linux
kernel did not properly perform size validations on incoming packets in
some situations. An attacker could possibly use this to expose sensitive
information (kernel memory). (CVE-2021-3655)

It was discovered that the Option USB High Speed Mobile device driver in
the Linux kernel did not properly handle error conditions. A physically
proximate attacker could use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2021-37159)

It was discovered that the AMD Cryptographic Coprocessor (CCP) driver in
the Linux kernel did not properly deallocate memory in some error
conditions. A local attacker could use this to cause a denial of service
(memory exhaustion). (CVE-2021-3744, CVE-2021-3764)

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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.

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

Ubuntu Release Package Version
20.04 focal linux-image-5.4.0-1047-raspi –  5.4.0-1047.52
linux-image-gkeop –  5.4.0.1027.30
linux-image-virtual –  5.4.0.91.95
linux-image-generic –  5.4.0.91.95
linux-image-oem –  5.4.0.91.95
linux-image-gke –  5.4.0.1056.66
linux-image-bluefield –  5.4.0.1022.23
linux-image-5.4.0-1058-oracle –  5.4.0-1058.62
linux-image-5.4.0-1027-gkeop –  5.4.0-1027.28
linux-image-5.4.0-1022-bluefield –  5.4.0-1022.25
linux-image-5.4.0-1056-gke –  5.4.0-1056.59
linux-image-ibm-lts-20.04 –  5.4.0.1008.9
linux-image-azure-lts-20.04 –  5.4.0.1064.62
linux-image-gkeop-5.4 –  5.4.0.1027.30
linux-image-raspi2 –  5.4.0.1047.82
linux-image-5.4.0-1050-kvm –  5.4.0-1050.52
linux-image-gcp-lts-20.04 –  5.4.0.1058.68
linux-image-5.4.0-91-lowlatency –  5.4.0-91.102
linux-image-ibm –  5.4.0.1008.9
linux-image-5.4.0-91-generic –  5.4.0-91.102
linux-image-aws-lts-20.04 –  5.4.0.1060.63
linux-image-5.4.0-1058-gcp –  5.4.0-1058.62
linux-image-5.4.0-1008-ibm –  5.4.0-1008.9
linux-image-5.4.0-1060-aws –  5.4.0-1060.63
linux-image-oem-osp1 –  5.4.0.91.95
linux-image-5.4.0-91-generic-lpae –  5.4.0-91.102
linux-image-oracle-lts-20.04 –  5.4.0.1058.58
linux-image-raspi –  5.4.0.1047.82
linux-image-gke-5.4 –  5.4.0.1056.66
linux-image-kvm –  5.4.0.1050.49
linux-image-generic-lpae –  5.4.0.91.95
linux-image-5.4.0-1064-azure –  5.4.0-1064.67
linux-image-lowlatency –  5.4.0.91.95
18.04 bionic linux-image-5.4.0-91-generic-lpae –  5.4.0-91.102~18.04.1
linux-image-generic-hwe-18.04 –  5.4.0.91.102~18.04.81
linux-image-snapdragon-hwe-18.04 –  5.4.0.91.102~18.04.81
linux-image-oem –  5.4.0.91.102~18.04.81
linux-image-aws –  5.4.0.1060.43
linux-image-raspi-hwe-18.04 –  5.4.0.1047.50
linux-image-5.4.0-1058-oracle –  5.4.0-1058.62~18.04.1
linux-image-oem-osp1 –  5.4.0.91.102~18.04.81
linux-image-generic-lpae-hwe-18.04 –  5.4.0.91.102~18.04.81
linux-image-5.4.0-1056-gke –  5.4.0-1056.59~18.04.1
linux-image-5.4.0-1047-raspi –  5.4.0-1047.52~18.04.1
linux-image-gkeop-5.4 –  5.4.0.1027.28~18.04.28
linux-image-azure –  5.4.0.1064.44
linux-image-5.4.0-91-generic –  5.4.0-91.102~18.04.1
linux-image-5.4.0-91-lowlatency –  5.4.0-91.102~18.04.1
linux-image-virtual-hwe-18.04 –  5.4.0.91.102~18.04.81
linux-image-5.4.0-1058-gcp –  5.4.0-1058.62~18.04.1
linux-image-5.4.0-1027-gkeop –  5.4.0-1027.28~18.04.1
linux-image-5.4.0-1060-aws –  5.4.0-1060.63~18.04.1
linux-image-gcp –  5.4.0.1058.44
linux-image-5.4.0-1064-azure –  5.4.0-1064.67~18.04.1
linux-image-oracle –  5.4.0.1058.62~18.04.38
linux-image-lowlatency-hwe-18.04 –  5.4.0.91.102~18.04.81
linux-image-gke-5.4 –  5.4.0.1056.59~18.04.21

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References

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