USN-6338-1: Linux kernel vulnerabilities

Published Sep 5, 2023
·
Updated

Zi Fan Tan discovered that the binder IPC implementation 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 execute arbitrary code. (CVE-2023-21255) It was discovered that a race condition existed in the f2fs file system in the Linux kernel, leading to a null pointer dereference vulnerability. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2023-2898) It was discovered that the DVB Core driver in the Linux kernel did not properly handle locking events in certain situations. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2023-31084) Quentin Minster discovered that the KSMBD implementation in the Linux kernel did not properly handle session setup requests. A remote attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2023-32247) Quentin Minster discovered that a race condition existed in the KSMBD implementation in the Linux kernel when handling sessions operations. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-32250, CVE-2023-32252, CVE-2023-32257) It was discovered that a race condition existed in the KSMBD implementation in the Linux kernel when handling session connections, leading to a use- after-free vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-32258) It was discovered that the KSMBD implementation in the Linux kernel did not properly validate buffer sizes in certain operations, leading to an out-of- bounds read vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-38426, CVE-2023-38428) It was discovered that the KSMBD implementation in the Linux kernel did not properly calculate the size of certain buffers. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-38429)

Affected Software

63 affected componentsFixes available
Canonical Linux kernel
All of the following
ubuntu/linux-image-6.2.0-1011-aws<6.2.0-1011.11
6.2.0-1011.11
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-6.2.0-1012-kvm<6.2.0-1012.12
6.2.0-1012.12
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-6.2.0-1012-lowlatency<6.2.0-1012.12
6.2.0-1012.12
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-6.2.0-1012-lowlatency-64k<6.2.0-1012.12
6.2.0-1012.12
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-6.2.0-1012-raspi<6.2.0-1012.14
6.2.0-1012.14
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-6.2.0-32-generic<6.2.0-32.32
6.2.0-32.32
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-6.2.0-32-generic-64k<6.2.0-32.32
6.2.0-32.32
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-6.2.0-32-generic-lpae<6.2.0-32.32
6.2.0-32.32
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-aws<6.2.0.1011.12
6.2.0.1011.12
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-generic<6.2.0.32.32
6.2.0.32.32
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-generic-64k<6.2.0.32.32
6.2.0.32.32
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-generic-lpae<6.2.0.32.32
6.2.0.32.32
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-kvm<6.2.0.1012.12
6.2.0.1012.12
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-lowlatency<6.2.0.1012.12
6.2.0.1012.12
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-lowlatency-64k<6.2.0.1012.12
6.2.0.1012.12
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-raspi<6.2.0.1012.15
6.2.0.1012.15
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-raspi-nolpae<6.2.0.1012.15
6.2.0.1012.15
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-virtual<6.2.0.32.32
6.2.0.32.32
Ubuntu Ubuntu=23.04
All of the following
ubuntu/linux-image-6.2.0-1011-aws<6.2.0-1011.11~22.04.1
6.2.0-1011.11~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-6.2.0-1012-lowlatency<6.2.0-1012.12~22.04.1
6.2.0-1012.12~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-6.2.0-1012-lowlatency-64k<6.2.0-1012.12~22.04.1
6.2.0-1012.12~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-6.2.0-32-generic<6.2.0-32.32~22.04.1
6.2.0-32.32~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-6.2.0-32-generic-64k<6.2.0-32.32~22.04.1
6.2.0-32.32~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-6.2.0-32-generic-lpae<6.2.0-32.32~22.04.1
6.2.0-32.32~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-aws<6.2.0.1011.11~22.04.1
6.2.0.1011.11~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-generic-64k-hwe-22.04<6.2.0.32.32~22.04.9
6.2.0.32.32~22.04.9
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-generic-hwe-22.04<6.2.0.32.32~22.04.9
6.2.0.32.32~22.04.9
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-generic-lpae-hwe-22.04<6.2.0.32.32~22.04.9
6.2.0.32.32~22.04.9
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-lowlatency-64k-hwe-22.04<6.2.0.1012.12~22.04.9
6.2.0.1012.12~22.04.9
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-lowlatency-hwe-22.04<6.2.0.1012.12~22.04.9
6.2.0.1012.12~22.04.9
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-virtual-hwe-22.04<6.2.0.32.32~22.04.9
6.2.0.32.32~22.04.9
Ubuntu Ubuntu=22.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-6.2.0-1011-aws to a version that resolves this vulnerability.

    Fixed in 6.2.0-1011.11
  2. Upgrade

    Upgrade ubuntu/linux-image-6.2.0-1012-kvm to a version that resolves this vulnerability.

    Fixed in 6.2.0-1012.12
  3. Upgrade

    Upgrade ubuntu/linux-image-6.2.0-1012-lowlatency to a version that resolves this vulnerability.

    Fixed in 6.2.0-1012.12
  4. Upgrade

    Upgrade ubuntu/linux-image-6.2.0-1012-lowlatency-64k to a version that resolves this vulnerability.

    Fixed in 6.2.0-1012.12
  5. Upgrade

    Upgrade ubuntu/linux-image-6.2.0-1012-raspi to a version that resolves this vulnerability.

    Fixed in 6.2.0-1012.14
  6. Upgrade

    Upgrade ubuntu/linux-image-6.2.0-32-generic to a version that resolves this vulnerability.

    Fixed in 6.2.0-32.32
  7. Upgrade

    Upgrade ubuntu/linux-image-6.2.0-32-generic-64k to a version that resolves this vulnerability.

    Fixed in 6.2.0-32.32
  8. Upgrade

    Upgrade ubuntu/linux-image-6.2.0-32-generic-lpae to a version that resolves this vulnerability.

    Fixed in 6.2.0-32.32
  9. Upgrade

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

    Fixed in 6.2.0.1011.12
  10. Upgrade

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

    Fixed in 6.2.0.32.32
  11. Upgrade

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

    Fixed in 6.2.0.32.32
  12. Upgrade

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

    Fixed in 6.2.0.32.32
  13. Upgrade

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

    Fixed in 6.2.0.1012.12
  14. Upgrade

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

    Fixed in 6.2.0.1012.12
  15. Upgrade

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

    Fixed in 6.2.0.1012.12
  16. Upgrade

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

    Fixed in 6.2.0.1012.15
  17. Upgrade

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

    Fixed in 6.2.0.1012.15
  18. Upgrade

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

    Fixed in 6.2.0.32.32
  19. Upgrade

    Upgrade ubuntu/linux-image-6.2.0-1011-aws to a version that resolves this vulnerability.

    Fixed in 6.2.0-1011.11~22.04.1
  20. Upgrade

    Upgrade ubuntu/linux-image-6.2.0-1012-lowlatency to a version that resolves this vulnerability.

    Fixed in 6.2.0-1012.12~22.04.1
  21. Upgrade

    Upgrade ubuntu/linux-image-6.2.0-1012-lowlatency-64k to a version that resolves this vulnerability.

    Fixed in 6.2.0-1012.12~22.04.1
  22. Upgrade

    Upgrade ubuntu/linux-image-6.2.0-32-generic to a version that resolves this vulnerability.

    Fixed in 6.2.0-32.32~22.04.1
  23. Upgrade

    Upgrade ubuntu/linux-image-6.2.0-32-generic-64k to a version that resolves this vulnerability.

    Fixed in 6.2.0-32.32~22.04.1
  24. Upgrade

    Upgrade ubuntu/linux-image-6.2.0-32-generic-lpae to a version that resolves this vulnerability.

    Fixed in 6.2.0-32.32~22.04.1
  25. Upgrade

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

    Fixed in 6.2.0.1011.11~22.04.1
  26. Upgrade

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

    Fixed in 6.2.0.32.32~22.04.9
  27. Upgrade

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

    Fixed in 6.2.0.32.32~22.04.9
  28. Upgrade

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

    Fixed in 6.2.0.32.32~22.04.9
  29. Upgrade

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

    Fixed in 6.2.0.1012.12~22.04.9
  30. Upgrade

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

    Fixed in 6.2.0.1012.12~22.04.9
  31. Upgrade

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

    Fixed in 6.2.0.32.32~22.04.9

Event History

Sep 5, 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-6338-1?

The severity of USN-6338-1 is high due to the potential for local attackers to cause a denial of service or execute arbitrary code.

2

How do I fix USN-6338-1?

To fix USN-6338-1, update your Linux kernel to the versions specified in the advisory such as 6.2.0-1011.11 or 6.2.0-1012.12.

3

What products are affected by USN-6338-1?

USN-6338-1 affects multiple Ubuntu Linux versions including 22.04 and 23.04 that utilize the specified kernel versions.

4

What types of vulnerabilities does USN-6338-1 address?

USN-6338-1 addresses use-after-free vulnerabilities and potential race conditions in the Linux kernel.

5

What should I do if I cannot update to the recommended versions for USN-6338-1?

If you cannot update to the recommended versions for USN-6338-1, consider applying temporary mitigations and monitoring for any unusual activities.

Company

Resources

Contact

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