USN-5113-1: Linux kernel vulnerabilities

Published Oct 19, 2021
·
Updated

It was discovered that a race condition existed in the Atheros Ath9k WiFi driver in the Linux kernel. An attacker could possibly use this to expose sensitive information (WiFi network traffic). (CVE-2020-3702) Alois Wohlschlager discovered that the overlay file system in the Linux kernel did not restrict private clones in some situations. An attacker could use this to expose sensitive information. (CVE-2021-3732) It was discovered that the btrfs file system in the Linux kernel did not properly handle removing a non-existent device id. An attacker with CAPSYSADMIN could use this to cause a denial of service. (CVE-2021-3739) It was discovered that the Qualcomm IPC Router protocol implementation in the Linux kernel did not properly validate metadata in some situations. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information. (CVE-2021-3743) It was discovered that the virtual terminal (vt) device implementation in the Linux kernel contained a race condition in its ioctl handling that led to an out-of-bounds read vulnerability. A local attacker could possibly use this to expose sensitive information. (CVE-2021-3753) It was discovered that the BPF subsystem in the Linux kernel contained an integer overflow in its hash table implementation. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-38166) It was discovered that the ext4 file system in the Linux kernel contained a race condition when writing xattrs to an inode. A local attacker could use this to cause a denial of service or possibly gain administrative privileges. (CVE-2021-40490) It was discovered that the 6pack network protocol driver in the Linux kernel did not properly perform validation checks. A privileged attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-42008)

Affected Software

85 affected componentsFixes available
Canonical Linux kernel
All of the following
ubuntu/linux-image-5.11.0-1021-raspi-nolpae<5.11.0-1021.22
5.11.0-1021.22
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-virtual<5.11.0.38.39
5.11.0.38.39
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-generic-64k<5.11.0.38.39
5.11.0.38.39
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-generic<5.11.0.38.39
5.11.0.38.39
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-38-lowlatency<5.11.0-38.42
5.11.0-38.42
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-38-generic-lpae<5.11.0-38.42
5.11.0-38.42
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-aws<5.11.0.1020.21
5.11.0.1020.21
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-oracle<5.11.0.1020.21
5.11.0.1020.21
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1020-azure<5.11.0-1020.21
5.11.0-1020.21
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-38-generic<5.11.0-38.42
5.11.0-38.42
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1018-kvm<5.11.0-1018.19
5.11.0-1018.19
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-azure<5.11.0.1020.21
5.11.0.1020.21
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-raspi-nolpae<5.11.0.1021.19
5.11.0.1021.19
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-oem-20.04<5.11.0.38.39
5.11.0.38.39
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-gke<5.11.0.1021.21
5.11.0.1021.21
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-gcp<5.11.0.1021.21
5.11.0.1021.21
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1021-gcp<5.11.0-1021.23
5.11.0-1021.23
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1020-aws<5.11.0-1020.21
5.11.0-1020.21
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-raspi<5.11.0.1021.19
5.11.0.1021.19
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1020-oracle<5.11.0-1020.21
5.11.0-1020.21
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-kvm<5.11.0.1018.19
5.11.0.1018.19
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-generic-lpae<5.11.0.38.39
5.11.0.38.39
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-lowlatency<5.11.0.38.39
5.11.0.38.39
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-38-generic-64k<5.11.0-38.42
5.11.0-38.42
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1021-raspi<5.11.0-1021.22
5.11.0-1021.22
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-virtual-hwe-20.04<5.11.0.38.42~20.04.17
5.11.0.38.42~20.04.17
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-azure-edge<5.11.0.1020.21~20.04.19
5.11.0.1020.21~20.04.19
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.11.0-38-lowlatency<5.11.0-38.42~20.04.1
5.11.0-38.42~20.04.1
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.11.0-38-generic-lpae<5.11.0-38.42~20.04.1
5.11.0-38.42~20.04.1
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-aws<5.11.0.1020.21~20.04.19
5.11.0.1020.21~20.04.19
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-oracle<5.11.0.1020.21~20.04.13
5.11.0.1020.21~20.04.13
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.11.0-1020-azure<5.11.0-1020.21~20.04.1
5.11.0-1020.21~20.04.1
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-lowlatency-hwe-20.04<5.11.0.38.42~20.04.17
5.11.0.38.42~20.04.17
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-generic-hwe-20.04<5.11.0.38.42~20.04.17
5.11.0.38.42~20.04.17
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-gcp<5.11.0.1021.23~20.04.20
5.11.0.1021.23~20.04.20
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.11.0-1021-gcp<5.11.0-1021.23~20.04.1
5.11.0-1021.23~20.04.1
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.11.0-1020-aws<5.11.0-1020.21~20.04.2
5.11.0-1020.21~20.04.2
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-generic-lpae-hwe-20.04<5.11.0.38.42~20.04.17
5.11.0.38.42~20.04.17
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.11.0-38-generic<5.11.0-38.42~20.04.1
5.11.0-38.42~20.04.1
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-generic-64k-hwe-20.04<5.11.0.38.42~20.04.17
5.11.0.38.42~20.04.17
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.11.0-1020-oracle<5.11.0-1020.21~20.04.1
5.11.0-1020.21~20.04.1
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.11.0-38-generic-64k<5.11.0-38.42~20.04.1
5.11.0-38.42~20.04.1
Ubuntu Ubuntu=20.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1021-raspi-nolpae to a version that resolves this vulnerability.

    Fixed in 5.11.0-1021.22
  2. Upgrade

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

    Fixed in 5.11.0.38.39
  3. Upgrade

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

    Fixed in 5.11.0.38.39
  4. Upgrade

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

    Fixed in 5.11.0.38.39
  5. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-38-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.11.0-38.42
  6. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-38-generic-lpae to a version that resolves this vulnerability.

    Fixed in 5.11.0-38.42
  7. Upgrade

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

    Fixed in 5.11.0.1020.21
  8. Upgrade

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

    Fixed in 5.11.0.1020.21
  9. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1020-azure to a version that resolves this vulnerability.

    Fixed in 5.11.0-1020.21
  10. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-38-generic to a version that resolves this vulnerability.

    Fixed in 5.11.0-38.42
  11. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1018-kvm to a version that resolves this vulnerability.

    Fixed in 5.11.0-1018.19
  12. Upgrade

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

    Fixed in 5.11.0.1020.21
  13. Upgrade

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

    Fixed in 5.11.0.1021.19
  14. Upgrade

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

    Fixed in 5.11.0.38.39
  15. Upgrade

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

    Fixed in 5.11.0.1021.21
  16. Upgrade

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

    Fixed in 5.11.0.1021.21
  17. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1021-gcp to a version that resolves this vulnerability.

    Fixed in 5.11.0-1021.23
  18. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1020-aws to a version that resolves this vulnerability.

    Fixed in 5.11.0-1020.21
  19. Upgrade

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

    Fixed in 5.11.0.1021.19
  20. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1020-oracle to a version that resolves this vulnerability.

    Fixed in 5.11.0-1020.21
  21. Upgrade

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

    Fixed in 5.11.0.1018.19
  22. Upgrade

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

    Fixed in 5.11.0.38.39
  23. Upgrade

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

    Fixed in 5.11.0.38.39
  24. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-38-generic-64k to a version that resolves this vulnerability.

    Fixed in 5.11.0-38.42
  25. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1021-raspi to a version that resolves this vulnerability.

    Fixed in 5.11.0-1021.22
  26. Upgrade

    Upgrade ubuntu/linux-image-virtual-hwe-20.04 to a version that resolves this vulnerability.

    Fixed in 5.11.0.38.42~20.04.17
  27. Upgrade

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

    Fixed in 5.11.0.1020.21~20.04.19
  28. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-38-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.11.0-38.42~20.04.1
  29. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-38-generic-lpae to a version that resolves this vulnerability.

    Fixed in 5.11.0-38.42~20.04.1
  30. Upgrade

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

    Fixed in 5.11.0.1020.21~20.04.19
  31. Upgrade

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

    Fixed in 5.11.0.1020.21~20.04.13
  32. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1020-azure to a version that resolves this vulnerability.

    Fixed in 5.11.0-1020.21~20.04.1
  33. Upgrade

    Upgrade ubuntu/linux-image-lowlatency-hwe-20.04 to a version that resolves this vulnerability.

    Fixed in 5.11.0.38.42~20.04.17
  34. Upgrade

    Upgrade ubuntu/linux-image-generic-hwe-20.04 to a version that resolves this vulnerability.

    Fixed in 5.11.0.38.42~20.04.17
  35. Upgrade

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

    Fixed in 5.11.0.1021.23~20.04.20
  36. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1021-gcp to a version that resolves this vulnerability.

    Fixed in 5.11.0-1021.23~20.04.1
  37. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1020-aws to a version that resolves this vulnerability.

    Fixed in 5.11.0-1020.21~20.04.2
  38. Upgrade

    Upgrade ubuntu/linux-image-generic-lpae-hwe-20.04 to a version that resolves this vulnerability.

    Fixed in 5.11.0.38.42~20.04.17
  39. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-38-generic to a version that resolves this vulnerability.

    Fixed in 5.11.0-38.42~20.04.1
  40. Upgrade

    Upgrade ubuntu/linux-image-generic-64k-hwe-20.04 to a version that resolves this vulnerability.

    Fixed in 5.11.0.38.42~20.04.17
  41. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1020-oracle to a version that resolves this vulnerability.

    Fixed in 5.11.0-1020.21~20.04.1
  42. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-38-generic-64k to a version that resolves this vulnerability.

    Fixed in 5.11.0-38.42~20.04.1
  43. Upgrade

    Upgrade Linux kernel to a version that resolves this vulnerability.

    Patch USN-5113-1

Event History

Oct 19, 2021
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-5113-1?

USN-5113-1 addresses a race condition vulnerability in the Atheros Ath9k WiFi driver that could potentially expose sensitive information.

2

How do I fix USN-5113-1?

To remediate USN-5113-1, update the affected Linux kernel packages to the specified patched versions listed in the advisory.

3

What impacted systems are affected by USN-5113-1?

USN-5113-1 affects Ubuntu version 21.04 systems running specific kernel packages.

4

Who discovered the vulnerability in USN-5113-1?

The vulnerability was discovered by Alois Wohlschlager.

5

What types of attacks can exploit the vulnerability in USN-5113-1?

An attacker could exploit the vulnerability to potentially access sensitive WiFi network traffic.

Company

Resources

Contact

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