USN-6043-1: Linux kernel vulnerabilities

Published Apr 26, 2023
·
Updated

It was discovered that the Traffic-Control Index (TCINDEX) implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix for this CVE, kernel support for the TCINDEX classifier has been removed. (CVE-2023-1829) It was discovered that the OverlayFS implementation in the Linux kernel did not properly handle copy up operation in some conditions. A local attacker could possibly use this to gain elevated privileges. (CVE-2023-0386)

Affected Software

69 affected componentsFixes available
Canonical Linux kernel
All of the following
ubuntu/linux-image-5.19.0-41-generic-64k<5.19.0-41.42
5.19.0-41.42
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-virtual<5.19.0.41.37
5.19.0.41.37
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-generic-64k<5.19.0.41.37
5.19.0.41.37
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-aws<5.19.0.1024.21
5.19.0.1024.21
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-gcp<5.19.0.1022.18
5.19.0.1022.18
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-5.19.0-1022-kvm<5.19.0-1022.23
5.19.0-1022.23
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-5.19.0-1025-azure<5.19.0-1025.28
5.19.0-1025.28
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-ibm<5.19.0.1021.18
5.19.0.1021.18
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-lowlatency-64k<5.19.0.1023.19
5.19.0.1023.19
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-5.19.0-1017-raspi<5.19.0-1017.24
5.19.0-1017.24
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-5.19.0-1023-lowlatency<5.19.0-1023.24
5.19.0-1023.24
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-azure<5.19.0.1025.20
5.19.0.1025.20
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-5.19.0-41-generic-lpae<5.19.0-41.42
5.19.0-41.42
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-raspi-nolpae<5.19.0.1017.16
5.19.0.1017.16
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-5.19.0-41-generic<5.19.0-41.42
5.19.0-41.42
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-5.19.0-1017-raspi-nolpae<5.19.0-1017.24
5.19.0-1017.24
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-5.19.0-1021-ibm<5.19.0-1021.23
5.19.0-1021.23
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-5.19.0-1023-lowlatency-64k<5.19.0-1023.24
5.19.0-1023.24
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-oracle<5.19.0.1022.18
5.19.0.1022.18
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-raspi<5.19.0.1017.16
5.19.0.1017.16
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-5.19.0-1022-oracle<5.19.0-1022.25
5.19.0-1022.25
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-kvm<5.19.0.1022.19
5.19.0.1022.19
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-5.19.0-1024-aws<5.19.0-1024.25
5.19.0-1024.25
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-5.19.0-1022-gcp<5.19.0-1022.24
5.19.0-1022.24
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-generic-lpae<5.19.0.41.37
5.19.0.41.37
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-generic<5.19.0.41.37
5.19.0.41.37
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-lowlatency<5.19.0.1023.19
5.19.0.1023.19
Ubuntu Ubuntu=22.10
All of the following
ubuntu/linux-image-5.19.0-41-generic-64k<5.19.0-41.42~22.04.1
5.19.0-41.42~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-virtual-hwe-22.04<5.19.0.41.42~22.04.14
5.19.0.41.42~22.04.14
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.19.0-41-generic<5.19.0-41.42~22.04.1
5.19.0-41.42~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-generic-64k-hwe-22.04<5.19.0.41.42~22.04.14
5.19.0.41.42~22.04.14
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-generic-hwe-22.04<5.19.0.41.42~22.04.14
5.19.0.41.42~22.04.14
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-generic-lpae-hwe-22.04<5.19.0.41.42~22.04.14
5.19.0.41.42~22.04.14
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.19.0-41-generic-lpae<5.19.0-41.42~22.04.1
5.19.0-41.42~22.04.1
Ubuntu Ubuntu=22.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-5.19.0-41-generic-64k to a version that resolves this vulnerability.

    Fixed in 5.19.0-41.42
  2. Upgrade

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

    Fixed in 5.19.0.41.37
  3. Upgrade

    Upgrade ubuntu/linux-image-generic-64k to a version that resolves this vulnerability.

    Fixed in 5.19.0.41.37
  4. Upgrade

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

    Fixed in 5.19.0.1024.21
  5. Upgrade

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

    Fixed in 5.19.0.1022.18
  6. Upgrade

    Upgrade ubuntu/linux-image-5.19.0-1022-kvm to a version that resolves this vulnerability.

    Fixed in 5.19.0-1022.23
  7. Upgrade

    Upgrade ubuntu/linux-image-5.19.0-1025-azure to a version that resolves this vulnerability.

    Fixed in 5.19.0-1025.28
  8. Upgrade

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

    Fixed in 5.19.0.1021.18
  9. Upgrade

    Upgrade ubuntu/linux-image-lowlatency-64k to a version that resolves this vulnerability.

    Fixed in 5.19.0.1023.19
  10. Upgrade

    Upgrade ubuntu/linux-image-5.19.0-1017-raspi to a version that resolves this vulnerability.

    Fixed in 5.19.0-1017.24
  11. Upgrade

    Upgrade ubuntu/linux-image-5.19.0-1023-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.19.0-1023.24
  12. Upgrade

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

    Fixed in 5.19.0.1025.20
  13. Upgrade

    Upgrade ubuntu/linux-image-5.19.0-41-generic-lpae to a version that resolves this vulnerability.

    Fixed in 5.19.0-41.42
  14. Upgrade

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

    Fixed in 5.19.0.1017.16
  15. Upgrade

    Upgrade ubuntu/linux-image-5.19.0-41-generic to a version that resolves this vulnerability.

    Fixed in 5.19.0-41.42
  16. Upgrade

    Upgrade ubuntu/linux-image-5.19.0-1017-raspi-nolpae to a version that resolves this vulnerability.

    Fixed in 5.19.0-1017.24
  17. Upgrade

    Upgrade ubuntu/linux-image-5.19.0-1021-ibm to a version that resolves this vulnerability.

    Fixed in 5.19.0-1021.23
  18. Upgrade

    Upgrade ubuntu/linux-image-5.19.0-1023-lowlatency-64k to a version that resolves this vulnerability.

    Fixed in 5.19.0-1023.24
  19. Upgrade

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

    Fixed in 5.19.0.1022.18
  20. Upgrade

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

    Fixed in 5.19.0.1017.16
  21. Upgrade

    Upgrade ubuntu/linux-image-5.19.0-1022-oracle to a version that resolves this vulnerability.

    Fixed in 5.19.0-1022.25
  22. Upgrade

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

    Fixed in 5.19.0.1022.19
  23. Upgrade

    Upgrade ubuntu/linux-image-5.19.0-1024-aws to a version that resolves this vulnerability.

    Fixed in 5.19.0-1024.25
  24. Upgrade

    Upgrade ubuntu/linux-image-5.19.0-1022-gcp to a version that resolves this vulnerability.

    Fixed in 5.19.0-1022.24
  25. Upgrade

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

    Fixed in 5.19.0.41.37
  26. Upgrade

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

    Fixed in 5.19.0.41.37
  27. Upgrade

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

    Fixed in 5.19.0.1023.19
  28. Upgrade

    Upgrade ubuntu/linux-image-5.19.0-41-generic-64k to a version that resolves this vulnerability.

    Fixed in 5.19.0-41.42~22.04.1
  29. Upgrade

    Upgrade ubuntu/linux-image-virtual-hwe-22.04 to a version that resolves this vulnerability.

    Fixed in 5.19.0.41.42~22.04.14
  30. Upgrade

    Upgrade ubuntu/linux-image-5.19.0-41-generic to a version that resolves this vulnerability.

    Fixed in 5.19.0-41.42~22.04.1
  31. Upgrade

    Upgrade ubuntu/linux-image-generic-64k-hwe-22.04 to a version that resolves this vulnerability.

    Fixed in 5.19.0.41.42~22.04.14
  32. Upgrade

    Upgrade ubuntu/linux-image-generic-hwe-22.04 to a version that resolves this vulnerability.

    Fixed in 5.19.0.41.42~22.04.14
  33. Upgrade

    Upgrade ubuntu/linux-image-generic-lpae-hwe-22.04 to a version that resolves this vulnerability.

    Fixed in 5.19.0.41.42~22.04.14
  34. Upgrade

    Upgrade ubuntu/linux-image-5.19.0-41-generic-lpae to a version that resolves this vulnerability.

    Fixed in 5.19.0-41.42~22.04.1
  35. Upgrade

    Upgrade Linux kernel to a version that resolves this vulnerability.

    Patch USN-6043-1

Event History

Apr 26, 2023
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-6043-1?

USN-6043-1 is rated as a high-severity vulnerability due to the potential for local attackers to gain elevated privileges.

2

How do I fix USN-6043-1?

To address the vulnerability identified in USN-6043-1, users should upgrade their Linux kernel to the recommended versions listed in the security notice.

3

What versions of Ubuntu are affected by USN-6043-1?

USN-6043-1 affects Ubuntu 22.10 with specific kernel versions outlined in the advisory.

4

What is the nature of the vulnerability in USN-6043-1?

The vulnerability in USN-6043-1 pertains to improper filter deactivation in the Traffic-Control Index implementation within the Linux kernel.

5

Who can exploit the vulnerability in USN-6043-1?

The vulnerability in USN-6043-1 could potentially be exploited by local attackers to escalate their privileges on affected systems.

Company

Resources

Contact

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