USN-5493-2: Linux kernel (HWE) vulnerability

Published Jul 1, 2022
·
Updated

It was discovered that the 8 Devices USB2CAN interface implementation in the Linux kernel did not properly handle certain error conditions, leading to a double-free. A local attacker could possibly use this to cause a denial of service (system crash).

Affected Software

48 affected componentsFixes available
All of the following
ubuntu/linux-image-5.13.0-52-generic-64k<5.13.0-52.59~20.04.1
5.13.0-52.59~20.04.1
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-generic-hwe-20.04<5.13.0.52.59~20.04.31
5.13.0.52.59~20.04.31
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-generic-lpae-hwe-20.04<5.13.0.52.59~20.04.31
5.13.0.52.59~20.04.31
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-virtual-hwe-20.04<5.13.0.52.59~20.04.31
5.13.0.52.59~20.04.31
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-generic-64k-hwe-20.04<5.13.0.52.59~20.04.31
5.13.0.52.59~20.04.31
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.13.0-52-generic-lpae<5.13.0-52.59~20.04.1
5.13.0-52.59~20.04.1
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-lowlatency-hwe-20.04<5.13.0.52.59~20.04.31
5.13.0.52.59~20.04.31
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.13.0-52-generic<5.13.0-52.59~20.04.1
5.13.0-52.59~20.04.1
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.13.0-52-lowlatency<5.13.0-52.59~20.04.1
5.13.0-52.59~20.04.1
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-oem-osp1<5.4.0.121.137~18.04.101
5.4.0.121.137~18.04.101
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-generic-hwe-18.04-edge<5.4.0.121.137~18.04.101
5.4.0.121.137~18.04.101
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-generic-lpae-hwe-18.04<5.4.0.121.137~18.04.101
5.4.0.121.137~18.04.101
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-snapdragon-hwe-18.04<5.4.0.121.137~18.04.101
5.4.0.121.137~18.04.101
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-generic-hwe-18.04<5.4.0.121.137~18.04.101
5.4.0.121.137~18.04.101
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.4.0-121-lowlatency<5.4.0-121.137~18.04.1
5.4.0-121.137~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-generic-lpae-hwe-18.04-edge<5.4.0.121.137~18.04.101
5.4.0.121.137~18.04.101
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-lowlatency-hwe-18.04<5.4.0.121.137~18.04.101
5.4.0.121.137~18.04.101
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-virtual-hwe-18.04<5.4.0.121.137~18.04.101
5.4.0.121.137~18.04.101
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-oem<5.4.0.121.137~18.04.101
5.4.0.121.137~18.04.101
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-snapdragon-hwe-18.04-edge<5.4.0.121.137~18.04.101
5.4.0.121.137~18.04.101
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.4.0-121-generic<5.4.0-121.137~18.04.1
5.4.0-121.137~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-lowlatency-hwe-18.04-edge<5.4.0.121.137~18.04.101
5.4.0.121.137~18.04.101
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-virtual-hwe-18.04-edge<5.4.0.121.137~18.04.101
5.4.0.121.137~18.04.101
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.4.0-121-generic-lpae<5.4.0-121.137~18.04.1
5.4.0-121.137~18.04.1
Ubuntu Ubuntu=18.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-5.13.0-52-generic-64k to a version that resolves this vulnerability.

    Fixed in 5.13.0-52.59~20.04.1
  2. Upgrade

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

    Fixed in 5.13.0.52.59~20.04.31
  3. Upgrade

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

    Fixed in 5.13.0.52.59~20.04.31
  4. Upgrade

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

    Fixed in 5.13.0.52.59~20.04.31
  5. Upgrade

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

    Fixed in 5.13.0.52.59~20.04.31
  6. Upgrade

    Upgrade ubuntu/linux-image-5.13.0-52-generic-lpae to a version that resolves this vulnerability.

    Fixed in 5.13.0-52.59~20.04.1
  7. Upgrade

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

    Fixed in 5.13.0.52.59~20.04.31
  8. Upgrade

    Upgrade ubuntu/linux-image-5.13.0-52-generic to a version that resolves this vulnerability.

    Fixed in 5.13.0-52.59~20.04.1
  9. Upgrade

    Upgrade ubuntu/linux-image-5.13.0-52-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.13.0-52.59~20.04.1
  10. Upgrade

    Upgrade ubuntu/linux-image-oem-osp1 to a version that resolves this vulnerability.

    Fixed in 5.4.0.121.137~18.04.101
  11. Upgrade

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

    Fixed in 5.4.0.121.137~18.04.101
  12. Upgrade

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

    Fixed in 5.4.0.121.137~18.04.101
  13. Upgrade

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

    Fixed in 5.4.0.121.137~18.04.101
  14. Upgrade

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

    Fixed in 5.4.0.121.137~18.04.101
  15. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-121-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.4.0-121.137~18.04.1
  16. Upgrade

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

    Fixed in 5.4.0.121.137~18.04.101
  17. Upgrade

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

    Fixed in 5.4.0.121.137~18.04.101
  18. Upgrade

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

    Fixed in 5.4.0.121.137~18.04.101
  19. Upgrade

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

    Fixed in 5.4.0.121.137~18.04.101
  20. Upgrade

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

    Fixed in 5.4.0.121.137~18.04.101
  21. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-121-generic to a version that resolves this vulnerability.

    Fixed in 5.4.0-121.137~18.04.1
  22. Upgrade

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

    Fixed in 5.4.0.121.137~18.04.101
  23. Upgrade

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

    Fixed in 5.4.0.121.137~18.04.101
  24. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-121-generic-lpae to a version that resolves this vulnerability.

    Fixed in 5.4.0-121.137~18.04.1

Event History

Jul 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?

The vulnerability ID is USN-5493-2.

2

What is the title of the vulnerability?

The title of the vulnerability is Linux kernel (HWE) vulnerability.

3

What is the description of the vulnerability?

The 8 Devices USB2CAN interface implementation in the Linux kernel did not properly handle certain error conditions, leading to a double-free, which could be exploited by a local attacker to cause a denial of service (system crash).

4

Which software versions are affected by the vulnerability?

The vulnerability affects Ubuntu Ubuntu 20.04 with Linux kernel versions 5.13.0-52.59~20.04.1, 5.13.0.52.59~20.04.31, and 5.13.0.52.59~20.04.31, and Ubuntu 18.04 with Linux kernel versions 5.4.0.121.137~18.04.101 and 5.4.0-121.137~18.04.1.

5

How do I fix the vulnerability?

To fix the vulnerability, update the Linux kernel to version 5.13.0-52.59~20.04.1 or later for Ubuntu 20.04, and version 5.4.0.121.137~18.04.101 or later for Ubuntu 18.04.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203