USN-5621-1: Linux kernel vulnerabilities

Published Sep 21, 2022
·
Updated

It was discovered that the framebuffer driver on the Linux kernel did not verify size limits when changing font or screen size, leading to an out-of- bounds write. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-33655) Domingo Dirutigliano and Nicola Guerrera discovered that the netfilter subsystem in the Linux kernel did not properly handle rules that truncated packets below the packet header size. When such rules are in place, a remote attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-36946)

Affected Software

72 affected componentsFixes available
All of the following
ubuntu/linux-image-dell300x<4.15.0.1053.53
4.15.0.1053.53
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-virtual<4.15.0.193.178
4.15.0.193.178
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-4.15.0-1136-gcp<4.15.0-1136.152
4.15.0-1136.152
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-aws-lts-18.04<4.15.0.1141.141
4.15.0.1141.141
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-4.15.0-193-lowlatency<4.15.0-193.204
4.15.0-193.204
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-4.15.0-1119-raspi2<4.15.0-1119.127
4.15.0-1119.127
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-4.15.0-1137-snapdragon<4.15.0-1137.147
4.15.0-1137.147
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-oracle-lts-18.04<4.15.0.1106.113
4.15.0.1106.113
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-raspi2<4.15.0.1119.116
4.15.0.1119.116
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-snapdragon<4.15.0.1137.138
4.15.0.1137.138
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-4.15.0-1053-dell300x<4.15.0-1053.58
4.15.0-1053.58
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-4.15.0-193-generic<4.15.0-193.204
4.15.0-193.204
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-azure-lts-18.04<4.15.0.1151.121
4.15.0.1151.121
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-kvm<4.15.0.1127.120
4.15.0.1127.120
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-4.15.0-193-generic-lpae<4.15.0-193.204
4.15.0-193.204
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-4.15.0-1106-oracle<4.15.0-1106.117
4.15.0-1106.117
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-gcp-lts-18.04<4.15.0.1136.152
4.15.0.1136.152
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-4.15.0-1141-aws<4.15.0-1141.152
4.15.0-1141.152
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-4.15.0-1127-kvm<4.15.0-1127.132
4.15.0-1127.132
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-generic<4.15.0.193.178
4.15.0.193.178
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-generic-lpae<4.15.0.193.178
4.15.0.193.178
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-4.15.0-1151-azure<4.15.0-1151.166
4.15.0-1151.166
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-lowlatency<4.15.0.193.178
4.15.0.193.178
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-lowlatency-hwe-16.04<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-4.15.0-193-generic<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-4.15.0-1136-gcp<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-4.15.0-193-lowlatency<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-oem<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-4.15.0-1141-aws-hwe<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-gke<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-gcp<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-aws-hwe<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-generic-hwe-16.04<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-4.15.0-1106-oracle<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-oracle<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-virtual-hwe-16.04<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=16.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-dell300x to a version that resolves this vulnerability.

    Fixed in 4.15.0.1053.53
  2. Upgrade

    Upgrade ubuntu/linux-image-virtual to a version that resolves this vulnerability.

    Fixed in 4.15.0.193.178
  3. Upgrade

    Upgrade ubuntu/linux-image-4.15.0-1136-gcp to a version that resolves this vulnerability.

    Fixed in 4.15.0-1136.152
  4. Upgrade

    Upgrade ubuntu/linux-image-aws-lts-18.04 to a version that resolves this vulnerability.

    Fixed in 4.15.0.1141.141
  5. Upgrade

    Upgrade ubuntu/linux-image-4.15.0-193-lowlatency to a version that resolves this vulnerability.

    Fixed in 4.15.0-193.204
  6. Upgrade

    Upgrade ubuntu/linux-image-4.15.0-1119-raspi2 to a version that resolves this vulnerability.

    Fixed in 4.15.0-1119.127
  7. Upgrade

    Upgrade ubuntu/linux-image-4.15.0-1137-snapdragon to a version that resolves this vulnerability.

    Fixed in 4.15.0-1137.147
  8. Upgrade

    Upgrade ubuntu/linux-image-oracle-lts-18.04 to a version that resolves this vulnerability.

    Fixed in 4.15.0.1106.113
  9. Upgrade

    Upgrade ubuntu/linux-image-raspi2 to a version that resolves this vulnerability.

    Fixed in 4.15.0.1119.116
  10. Upgrade

    Upgrade ubuntu/linux-image-snapdragon to a version that resolves this vulnerability.

    Fixed in 4.15.0.1137.138
  11. Upgrade

    Upgrade ubuntu/linux-image-4.15.0-1053-dell300x to a version that resolves this vulnerability.

    Fixed in 4.15.0-1053.58
  12. Upgrade

    Upgrade ubuntu/linux-image-4.15.0-193-generic to a version that resolves this vulnerability.

    Fixed in 4.15.0-193.204
  13. Upgrade

    Upgrade ubuntu/linux-image-azure-lts-18.04 to a version that resolves this vulnerability.

    Fixed in 4.15.0.1151.121
  14. Upgrade

    Upgrade ubuntu/linux-image-kvm to a version that resolves this vulnerability.

    Fixed in 4.15.0.1127.120
  15. Upgrade

    Upgrade ubuntu/linux-image-4.15.0-193-generic-lpae to a version that resolves this vulnerability.

    Fixed in 4.15.0-193.204
  16. Upgrade

    Upgrade ubuntu/linux-image-4.15.0-1106-oracle to a version that resolves this vulnerability.

    Fixed in 4.15.0-1106.117
  17. Upgrade

    Upgrade ubuntu/linux-image-gcp-lts-18.04 to a version that resolves this vulnerability.

    Fixed in 4.15.0.1136.152
  18. Upgrade

    Upgrade ubuntu/linux-image-4.15.0-1141-aws to a version that resolves this vulnerability.

    Fixed in 4.15.0-1141.152
  19. Upgrade

    Upgrade ubuntu/linux-image-4.15.0-1127-kvm to a version that resolves this vulnerability.

    Fixed in 4.15.0-1127.132
  20. Upgrade

    Upgrade ubuntu/linux-image-generic to a version that resolves this vulnerability.

    Fixed in 4.15.0.193.178
  21. Upgrade

    Upgrade ubuntu/linux-image-generic-lpae to a version that resolves this vulnerability.

    Fixed in 4.15.0.193.178
  22. Upgrade

    Upgrade ubuntu/linux-image-4.15.0-1151-azure to a version that resolves this vulnerability.

    Fixed in 4.15.0-1151.166
  23. Upgrade

    Upgrade ubuntu/linux-image-lowlatency to a version that resolves this vulnerability.

    Fixed in 4.15.0.193.178
  24. Upgrade

    Upgrade ubuntu/linux-image-lowlatency-hwe-16.04 to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  25. Upgrade

    Upgrade ubuntu/linux-image-4.15.0-193-generic to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  26. Upgrade

    Upgrade ubuntu/linux-image-4.15.0-1136-gcp to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  27. Upgrade

    Upgrade ubuntu/linux-image-4.15.0-193-lowlatency to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  28. Upgrade

    Upgrade ubuntu/linux-image-oem to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  29. Upgrade

    Upgrade ubuntu/linux-image-4.15.0-1141-aws-hwe to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  30. Upgrade

    Upgrade ubuntu/linux-image-gke to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  31. Upgrade

    Upgrade ubuntu/linux-image-gcp to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  32. Upgrade

    Upgrade ubuntu/linux-image-aws-hwe to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  33. Upgrade

    Upgrade ubuntu/linux-image-generic-hwe-16.04 to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  34. Upgrade

    Upgrade ubuntu/linux-image-4.15.0-1106-oracle to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  35. Upgrade

    Upgrade ubuntu/linux-image-oracle to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  36. Upgrade

    Upgrade ubuntu/linux-image-virtual-hwe-16.04 to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro

Event History

Sep 21, 2022
Advisory Published
via Ubuntu·12:00 AM
Data Sourced
via Ubuntu·12:00 AM
DescriptionAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of USN-5621-1?

The severity of USN-5621-1 is high due to its potential to cause a denial of service or execute arbitrary code.

2

How do I fix USN-5621-1?

You can fix USN-5621-1 by upgrading your Linux kernel to the specified patched versions mentioned in the advisory.

3

Which Ubuntu versions are affected by USN-5621-1?

USN-5621-1 affects Ubuntu 18.04 LTS systems using the specified kernel versions.

4

What types of attacks could be launched using the USN-5621-1 vulnerability?

An attacker could exploit the USN-5621-1 vulnerability to perform a denial of service attack or potentially run arbitrary code.

5

Is there a temporary workaround for USN-5621-1?

There is no official temporary workaround for USN-5621-1; updating the kernel is necessary to mitigate the vulnerability.

Company

Resources

Contact

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