USN-9027-1: linux, linux-aws, linux-aws-5.15, linux-aws-fips, linux-azure, linux-azure-5.15, linux-azure-fde-5.15, linux-azure-fips, linux-gcp, linux-gcp-5.15, linux-gcp-fips, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-intel-iot-realtime, linux-intel-iotg, linux-intel-iotg-5.15, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-oracle, linux-oracle-5.15, linux-realtime vulnerabilities

Published Nov 10, 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: - x86 architecture; - Hardware monitoring drivers; - OCFS2 file system; - IPv4 networking; - Ethernet bridge; - Netfilter; - XFRM subsystem; (CVE-2025-21656, CVE-2026-63940, CVE-2026-74350, CVE-2026-98432, CVE-2026-99999)

Affected Software

28 affected componentsFixes available
ubuntu/linux-aws-5.15<5.15.0-1120.127~20.04.1
5.15.0-1120.127~20.04.1
ubuntu/linux-azure-5.15<5.15.0-1126.135~20.04.1
5.15.0-1126.135~20.04.1
ubuntu/linux-azure-fde-5.15<5.15.0-1125.134~20.04.1
5.15.0-1125.134~20.04.1
ubuntu/linux-gcp-5.15<5.15.0-1121.131~20.04.1
5.15.0-1121.131~20.04.1
ubuntu/linux-hwe-5.15<5.15.0-203.213~20.04.1
5.15.0-203.213~20.04.1
ubuntu/linux-ibm-5.15<5.15.0-1114.118~20.04.1
5.15.0-1114.118~20.04.1
ubuntu/linux-intel-iotg-5.15<5.15.0-1115.121~20.04.1
5.15.0-1115.121~20.04.1
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-198.208~20.04.1
5.15.0-198.208~20.04.1
ubuntu/linux-nvidia-tegra-5.15<5.15.0-1071.73~20.04.1
5.15.0-1071.73~20.04.1
ubuntu/linux-oracle-5.15<5.15.0-1117.123~20.04.1
5.15.0-1117.123~20.04.1
ubuntu/linux<5.15.0-203.213
5.15.0-203.213
ubuntu/linux-aws<5.15.0-1120.127
5.15.0-1120.127
ubuntu/linux-azure<5.15.0-1126.135
5.15.0-1126.135
ubuntu/linux-gcp<5.15.0-1121.131
5.15.0-1121.131
ubuntu/linux-gke<5.15.0-1116.122
5.15.0-1116.122
ubuntu/linux-gkeop<5.15.0-1103.111
5.15.0-1103.111
ubuntu/linux-ibm<5.15.0-1114.118
5.15.0-1114.118
ubuntu/linux-intel-iotg<5.15.0-1115.121
5.15.0-1115.121
ubuntu/linux-kvm<5.15.0-1112.117
5.15.0-1112.117
ubuntu/linux-lowlatency<5.15.0-198.208
5.15.0-198.208
ubuntu/linux-nvidia<5.15.0-1115.116
5.15.0-1115.116
ubuntu/linux-nvidia-tegra<5.15.0-1071.73
5.15.0-1071.73
ubuntu/linux-oracle<5.15.0-1117.123
5.15.0-1117.123
ubuntu/linux-intel-iot-realtime<5.15.0-1112.116
5.15.0-1112.116
ubuntu/linux-realtime<5.15.0-1119.128
5.15.0-1119.128
ubuntu/linux-aws-fips<5.15.0-1120.127+fips1
5.15.0-1120.127+fips1
ubuntu/linux-azure-fips<5.15.0-1126.135+fips1
5.15.0-1126.135+fips1
ubuntu/linux-gcp-fips<5.15.0-1121.131+fips1
5.15.0-1121.131+fips1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1120.127~20.04.1
  2. Upgrade

    Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1126.135~20.04.1
  3. Upgrade

    Upgrade ubuntu/linux-azure-fde-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1125.134~20.04.1
  4. Upgrade

    Upgrade ubuntu/linux-gcp-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1121.131~20.04.1
  5. Upgrade

    Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-203.213~20.04.1
  6. Upgrade

    Upgrade ubuntu/linux-ibm-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1114.118~20.04.1
  7. Upgrade

    Upgrade ubuntu/linux-intel-iotg-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1115.121~20.04.1
  8. Upgrade

    Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-198.208~20.04.1
  9. Upgrade

    Upgrade ubuntu/linux-nvidia-tegra-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1071.73~20.04.1
  10. Upgrade

    Upgrade ubuntu/linux-oracle-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1117.123~20.04.1
  11. Upgrade

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

    Fixed in 5.15.0-203.213
  12. Upgrade

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

    Fixed in 5.15.0-1120.127
  13. Upgrade

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

    Fixed in 5.15.0-1126.135
  14. Upgrade

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

    Fixed in 5.15.0-1121.131
  15. Upgrade

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

    Fixed in 5.15.0-1116.122
  16. Upgrade

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

    Fixed in 5.15.0-1103.111
  17. Upgrade

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

    Fixed in 5.15.0-1114.118
  18. Upgrade

    Upgrade ubuntu/linux-intel-iotg to a version that resolves this vulnerability.

    Fixed in 5.15.0-1115.121
  19. Upgrade

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

    Fixed in 5.15.0-1112.117
  20. Upgrade

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

    Fixed in 5.15.0-198.208
  21. Upgrade

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

    Fixed in 5.15.0-1115.116
  22. Upgrade

    Upgrade ubuntu/linux-nvidia-tegra to a version that resolves this vulnerability.

    Fixed in 5.15.0-1071.73
  23. Upgrade

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

    Fixed in 5.15.0-1117.123
  24. Upgrade

    Upgrade ubuntu/linux-intel-iot-realtime to a version that resolves this vulnerability.

    Fixed in 5.15.0-1112.116
  25. Upgrade

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

    Fixed in 5.15.0-1119.128
  26. Upgrade

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

    Fixed in 5.15.0-1120.127+fips1
  27. Upgrade

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

    Fixed in 5.15.0-1126.135+fips1
  28. Upgrade

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

    Fixed in 5.15.0-1121.131+fips1

Event History

Nov 10, 2026
Advisory Published
via OSV·08:45 AM
Data Sourced
via OSV·08:45 AM
DescriptionAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

Which systems are covered by this notice?

The listed affected software consists of Ubuntu kernel packages for AWS 5.15, Azure 5.15 and Azure FDE 5.15, GCP 5.15, HWE 5.15, IBM 5.15, Intel IoTG 5.15, and low-latency HWE 5.15.

2

Which parts of the kernel are addressed by the update?

The update addresses issues in the x86 architecture, hardware monitoring drivers, OCFS2, IPv4 networking, Ethernet bridging, Netfilter, and the XFRM subsystem.

3

What vulnerability identifiers are included?

The notice includes CVE-2025-21656, CVE-2026-63940, CVE-2026-74350, CVE-2026-98432, and CVE-2026-99999.

Company

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