USN-5592-1: Linux kernel vulnerabilities

Published Sep 1, 2022
·
Updated

Asaf Modelevsky discovered that the Intel(R) 10GbE PCI Express (ixgbe) Ethernet driver for the Linux kernel performed insufficient control flow management. A local attacker could possibly use this to cause a denial of service. (CVE-2021-33061) It was discovered that the virtual terminal driver in the Linux kernel did not properly handle VGA console font changes, 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-2021-33656)

Affected Software

54 affected componentsFixes available
All of the following
ubuntu/linux-image-gkeop<5.4.0.1052.53
5.4.0.1052.53
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1081-gke<5.4.0-1081.87
5.4.0-1081.87
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1032-ibm<5.4.0-1032.36
5.4.0-1032.36
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1090-azure<5.4.0-1090.95
5.4.0-1090.95
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-bluefield<5.4.0.1045.44
5.4.0.1045.44
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-ibm-lts-20.04<5.4.0.1032.61
5.4.0.1032.61
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-azure-lts-20.04<5.4.0.1090.87
5.4.0.1090.87
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1082-oracle<5.4.0-1082.90
5.4.0-1082.90
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1045-bluefield<5.4.0-1045.50
5.4.0-1045.50
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-gkeop-5.4<5.4.0.1052.53
5.4.0.1052.53
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-gke<5.4.0.1081.89
5.4.0.1081.89
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-ibm<5.4.0.1032.61
5.4.0.1032.61
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-aws-lts-20.04<5.4.0.1084.84
5.4.0.1084.84
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-gcp-lts-20.04<5.4.0.1087.92
5.4.0.1087.92
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1052-gkeop<5.4.0-1052.55
5.4.0-1052.55
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-oracle-lts-20.04<5.4.0.1082.79
5.4.0.1082.79
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1074-kvm<5.4.0-1074.79
5.4.0-1074.79
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-gke-5.4<5.4.0.1081.89
5.4.0.1081.89
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1084-aws<5.4.0-1084.91
5.4.0-1084.91
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-kvm<5.4.0.1074.71
5.4.0.1074.71
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1087-gcp<5.4.0-1087.95
5.4.0-1087.95
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1087-gcp<5.4.0-1087.95~18.04.1
5.4.0-1087.95~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-oracle<5.4.0.1082.90~18.04.59
5.4.0.1082.90~18.04.59
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-ibm<5.4.0.1032.46
5.4.0.1032.46
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.4.0-1032-ibm<5.4.0-1032.36~18.04.1
5.4.0-1032.36~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.4.0-1082-oracle<5.4.0-1082.90~18.04.1
5.4.0-1082.90~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-gcp<5.4.0.1087.66
5.4.0.1087.66
Ubuntu Ubuntu=18.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 5.4.0.1052.53
  2. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1081-gke to a version that resolves this vulnerability.

    Fixed in 5.4.0-1081.87
  3. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1032-ibm to a version that resolves this vulnerability.

    Fixed in 5.4.0-1032.36
  4. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1090-azure to a version that resolves this vulnerability.

    Fixed in 5.4.0-1090.95
  5. Upgrade

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

    Fixed in 5.4.0.1045.44
  6. Upgrade

    Upgrade ubuntu/linux-image-ibm-lts-20.04 to a version that resolves this vulnerability.

    Fixed in 5.4.0.1032.61
  7. Upgrade

    Upgrade ubuntu/linux-image-azure-lts-20.04 to a version that resolves this vulnerability.

    Fixed in 5.4.0.1090.87
  8. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1082-oracle to a version that resolves this vulnerability.

    Fixed in 5.4.0-1082.90
  9. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1045-bluefield to a version that resolves this vulnerability.

    Fixed in 5.4.0-1045.50
  10. Upgrade

    Upgrade ubuntu/linux-image-gkeop-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0.1052.53
  11. Upgrade

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

    Fixed in 5.4.0.1081.89
  12. Upgrade

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

    Fixed in 5.4.0.1032.61
  13. Upgrade

    Upgrade ubuntu/linux-image-aws-lts-20.04 to a version that resolves this vulnerability.

    Fixed in 5.4.0.1084.84
  14. Upgrade

    Upgrade ubuntu/linux-image-gcp-lts-20.04 to a version that resolves this vulnerability.

    Fixed in 5.4.0.1087.92
  15. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1052-gkeop to a version that resolves this vulnerability.

    Fixed in 5.4.0-1052.55
  16. Upgrade

    Upgrade ubuntu/linux-image-oracle-lts-20.04 to a version that resolves this vulnerability.

    Fixed in 5.4.0.1082.79
  17. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1074-kvm to a version that resolves this vulnerability.

    Fixed in 5.4.0-1074.79
  18. Upgrade

    Upgrade ubuntu/linux-image-gke-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0.1081.89
  19. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1084-aws to a version that resolves this vulnerability.

    Fixed in 5.4.0-1084.91
  20. Upgrade

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

    Fixed in 5.4.0.1074.71
  21. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1087-gcp to a version that resolves this vulnerability.

    Fixed in 5.4.0-1087.95
  22. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1087-gcp to a version that resolves this vulnerability.

    Fixed in 5.4.0-1087.95~18.04.1
  23. Upgrade

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

    Fixed in 5.4.0.1082.90~18.04.59
  24. Upgrade

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

    Fixed in 5.4.0.1032.46
  25. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1032-ibm to a version that resolves this vulnerability.

    Fixed in 5.4.0-1032.36~18.04.1
  26. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1082-oracle to a version that resolves this vulnerability.

    Fixed in 5.4.0-1082.90~18.04.1
  27. Upgrade

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

    Fixed in 5.4.0.1087.66

Event History

Sep 1, 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 vulnerability ID for this security notice?

The vulnerability ID for this security notice is USN-5592-1.

2

What is the severity of CVE-2021-33061?

The severity of CVE-2021-33061 is not specified in the security notice. Please refer to the referenced link for more details.

3

Which Linux kernel versions are affected by CVE-2021-33061?

The Linux kernel versions 5.4.0.1052.53 and lower are affected by CVE-2021-33061.

4

How can a local attacker exploit CVE-2021-33061?

A local attacker can exploit CVE-2021-33061 to cause a denial of service.

5

How can I fix the vulnerability in Ubuntu 20.04?

To fix the vulnerability in Ubuntu 20.04, update the linux-image-gkeop package to version 5.4.0.1052.53 or higher.

Company

Resources

Contact

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