USN-8920-1: Linux kernel vulnerabilities

Published Oct 13, 2026
·
Updated

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems:

Affected Software

31 affected componentsFixes available
Canonical Linux kernel
All of the following
ubuntu/linux-image-5.4.0-1111-ibm<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1165-aws-fips<FIPS-140
FIPS-140
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1170-azure-fips<FIPS-140
FIPS-140
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-aws-fips<FIPS-140
FIPS-140
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-aws-fips-5.4<FIPS-140
FIPS-140
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-azure-fips<FIPS-140
FIPS-140
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-azure-fips-5.4<FIPS-140
FIPS-140
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-ibm-5.4<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-ibm-lts-20.04<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1111-ibm<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.4.0-1165-aws<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-aws<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-aws-5.4<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-ibm<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-ibm-5.4<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=18.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1111-ibm to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  2. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1165-aws-fips to a version that resolves this vulnerability.

    Fixed in FIPS-140
  3. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1170-azure-fips to a version that resolves this vulnerability.

    Fixed in FIPS-140
  4. Upgrade

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

    Fixed in FIPS-140
  5. Upgrade

    Upgrade ubuntu/linux-image-aws-fips-5.4 to a version that resolves this vulnerability.

    Fixed in FIPS-140
  6. Upgrade

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

    Fixed in FIPS-140
  7. Upgrade

    Upgrade ubuntu/linux-image-azure-fips-5.4 to a version that resolves this vulnerability.

    Fixed in FIPS-140
  8. Upgrade

    Upgrade ubuntu/linux-image-ibm-5.4 to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  9. Upgrade

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

    Fixed in Ubuntu Pro
  10. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1165-aws to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  11. Upgrade

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

    Fixed in Ubuntu Pro
  12. Upgrade

    Upgrade ubuntu/linux-image-aws-5.4 to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  13. Upgrade

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

    Fixed in Ubuntu Pro

Event History

Oct 13, 2026
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

Which Ubuntu kernel package variants are identified in this notice?

The notice lists linux-image-5.4.0-1111-ibm, linux-image-ibm-5.4, linux-image-5.4.0-1165-aws-fips, linux-image-5.4.0-1170-azure-fips, linux-image-aws-fips, and linux-image-aws-fips-5.4.

2

Which CVEs are referenced by this notice?

The referenced CVEs are CVE-2026-53221, CVE-2026-53131, and CVE-2026-52910.

Company

Resources

Contact

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