USN-4319-1: Linux kernel vulnerabilities

Published Apr 10, 2020
·
Updated

It was discovered that the IPMI message handler implementation in the Linux kernel did not properly deallocate memory in certain situations. A local attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19046) Al Viro discovered that the vfs layer in the Linux kernel contained a use- after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2020-8428)

Affected Software

77 affected componentsFixes available
Canonical Linux kernel
All of the following
ubuntu/linux-image-5.3.0-1014-oracle<5.3.0-1014.15
5.3.0-1014.15
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-5.3.0-1015-kvm<5.3.0-1015.16
5.3.0-1015.16
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-5.3.0-1016-aws<5.3.0-1016.17
5.3.0-1016.17
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-5.3.0-1017-gcp<5.3.0-1017.18
5.3.0-1017.18
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-5.3.0-1019-azure<5.3.0-1019.20
5.3.0-1019.20
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-5.3.0-1022-raspi2<5.3.0-1022.24
5.3.0-1022.24
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-5.3.0-46-generic<5.3.0-46.38
5.3.0-46.38
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-5.3.0-46-generic-lpae<5.3.0-46.38
5.3.0-46.38
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-5.3.0-46-lowlatency<5.3.0-46.38
5.3.0-46.38
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-5.3.0-46-snapdragon<5.3.0-46.38
5.3.0-46.38
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-aws<5.3.0.1016.18
5.3.0.1016.18
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-azure<5.3.0.1019.38
5.3.0.1019.38
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-gcp<5.3.0.1017.18
5.3.0.1017.18
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-generic<5.3.0.46.39
5.3.0.46.39
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-generic-lpae<5.3.0.46.39
5.3.0.46.39
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-gke<5.3.0.1017.18
5.3.0.1017.18
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-kvm<5.3.0.1015.17
5.3.0.1015.17
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-lowlatency<5.3.0.46.39
5.3.0.46.39
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-oracle<5.3.0.1014.15
5.3.0.1014.15
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-raspi2<5.3.0.1022.19
5.3.0.1022.19
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-snapdragon<5.3.0.46.39
5.3.0.46.39
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-virtual<5.3.0.46.39
5.3.0.46.39
Ubuntu Ubuntu=19.10
All of the following
ubuntu/linux-image-5.3.0-1014-oracle<5.3.0-1014.15~18.04.1
5.3.0-1014.15~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.3.0-1017-gcp<5.3.0-1017.18~18.04.1
5.3.0-1017.18~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.3.0-1019-azure<5.3.0-1019.20~18.04.1
5.3.0-1019.20~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.3.0-1022-raspi2<5.3.0-1022.24~18.04.1
5.3.0-1022.24~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.3.0-46-generic<5.3.0-46.38~18.04.1
5.3.0-46.38~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.3.0-46-generic-lpae<5.3.0-46.38~18.04.1
5.3.0-46.38~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.3.0-46-lowlatency<5.3.0-46.38~18.04.1
5.3.0-46.38~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-azure-edge<5.3.0.1019.19
5.3.0.1019.19
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-gcp-edge<5.3.0.1017.16
5.3.0.1017.16
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-generic-hwe-18.04<5.3.0.46.102
5.3.0.46.102
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-generic-lpae-hwe-18.04<5.3.0.46.102
5.3.0.46.102
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-lowlatency-hwe-18.04<5.3.0.46.102
5.3.0.46.102
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-oracle-edge<5.3.0.1014.13
5.3.0.1014.13
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-raspi2-hwe-18.04<5.3.0.1022.11
5.3.0.1022.11
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-snapdragon-hwe-18.04<5.3.0.46.102
5.3.0.46.102
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-virtual-hwe-18.04<5.3.0.46.102
5.3.0.46.102
Ubuntu Ubuntu=18.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-1014-oracle to a version that resolves this vulnerability.

    Fixed in 5.3.0-1014.15
  2. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-1015-kvm to a version that resolves this vulnerability.

    Fixed in 5.3.0-1015.16
  3. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-1016-aws to a version that resolves this vulnerability.

    Fixed in 5.3.0-1016.17
  4. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-1017-gcp to a version that resolves this vulnerability.

    Fixed in 5.3.0-1017.18
  5. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-1019-azure to a version that resolves this vulnerability.

    Fixed in 5.3.0-1019.20
  6. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-1022-raspi2 to a version that resolves this vulnerability.

    Fixed in 5.3.0-1022.24
  7. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-46-generic to a version that resolves this vulnerability.

    Fixed in 5.3.0-46.38
  8. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-46-generic-lpae to a version that resolves this vulnerability.

    Fixed in 5.3.0-46.38
  9. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-46-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.3.0-46.38
  10. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-46-snapdragon to a version that resolves this vulnerability.

    Fixed in 5.3.0-46.38
  11. Upgrade

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

    Fixed in 5.3.0.1016.18
  12. Upgrade

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

    Fixed in 5.3.0.1019.38
  13. Upgrade

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

    Fixed in 5.3.0.1017.18
  14. Upgrade

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

    Fixed in 5.3.0.46.39
  15. Upgrade

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

    Fixed in 5.3.0.46.39
  16. Upgrade

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

    Fixed in 5.3.0.1017.18
  17. Upgrade

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

    Fixed in 5.3.0.1015.17
  18. Upgrade

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

    Fixed in 5.3.0.46.39
  19. Upgrade

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

    Fixed in 5.3.0.1014.15
  20. Upgrade

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

    Fixed in 5.3.0.1022.19
  21. Upgrade

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

    Fixed in 5.3.0.46.39
  22. Upgrade

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

    Fixed in 5.3.0.46.39
  23. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-1014-oracle to a version that resolves this vulnerability.

    Fixed in 5.3.0-1014.15~18.04.1
  24. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-1017-gcp to a version that resolves this vulnerability.

    Fixed in 5.3.0-1017.18~18.04.1
  25. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-1019-azure to a version that resolves this vulnerability.

    Fixed in 5.3.0-1019.20~18.04.1
  26. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-1022-raspi2 to a version that resolves this vulnerability.

    Fixed in 5.3.0-1022.24~18.04.1
  27. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-46-generic to a version that resolves this vulnerability.

    Fixed in 5.3.0-46.38~18.04.1
  28. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-46-generic-lpae to a version that resolves this vulnerability.

    Fixed in 5.3.0-46.38~18.04.1
  29. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-46-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.3.0-46.38~18.04.1
  30. Upgrade

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

    Fixed in 5.3.0.1019.19
  31. Upgrade

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

    Fixed in 5.3.0.1017.16
  32. Upgrade

    Upgrade ubuntu/linux-image-generic-hwe-18.04 to a version that resolves this vulnerability.

    Fixed in 5.3.0.46.102
  33. Upgrade

    Upgrade ubuntu/linux-image-generic-lpae-hwe-18.04 to a version that resolves this vulnerability.

    Fixed in 5.3.0.46.102
  34. Upgrade

    Upgrade ubuntu/linux-image-lowlatency-hwe-18.04 to a version that resolves this vulnerability.

    Fixed in 5.3.0.46.102
  35. Upgrade

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

    Fixed in 5.3.0.1014.13
  36. Upgrade

    Upgrade ubuntu/linux-image-raspi2-hwe-18.04 to a version that resolves this vulnerability.

    Fixed in 5.3.0.1022.11
  37. Upgrade

    Upgrade ubuntu/linux-image-snapdragon-hwe-18.04 to a version that resolves this vulnerability.

    Fixed in 5.3.0.46.102
  38. Upgrade

    Upgrade ubuntu/linux-image-virtual-hwe-18.04 to a version that resolves this vulnerability.

    Fixed in 5.3.0.46.102

Event History

Apr 10, 2020
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-4319-1?

The severity of USN-4319-1 is considered to be high due to its potential to cause a denial of service through kernel memory exhaustion.

2

How do I fix USN-4319-1?

To fix USN-4319-1, upgrade the kernel to the latest patched version as specified in the advisory.

3

Which Ubuntu versions are affected by USN-4319-1?

USN-4319-1 affects Ubuntu 19.10 and specific kernel versions in the Ubuntu 18.04 series.

4

Can USN-4319-1 be exploited remotely?

No, USN-4319-1 requires local access to exploit the vulnerability.

5

What is CVE-2019-19046 in relation to USN-4319-1?

CVE-2019-19046 is the identifier for the specific vulnerability addressed in USN-4319-1 that allows a local attacker to cause denial of service.

Company

Resources

Contact

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