Ubuntu USN-8793-1 Fixes Linux kernel (Azure CVM) Vulnerabilities
Tech GuruQuick Answer
The authority published USN-8793-1 for Linux kernel (Azure CVM) vulnerabilities on Ubuntu 24.04 LTS (noble). Several security issues were fixed in the Linux kernel. After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. Affected deployments should be matched to the authority's exact scope and moved to the supported fixed release.
Confirm Scope And Apply The Supported Fix
What to do now: Inventory Linux kernel (Azure CVM) vulnerabilities on Ubuntu 24.04 LTS (noble), match the exact affected release or feature, apply the authority-supported fixed build or service remediation, validate the dependent workflow, and preserve evidence.
Last verified: 2026-09-21 UTC. Recheck the authoritative advisory and supported distribution channel before changing production.
Scope And Authority
| Product scope | Linux kernel (Azure CVM) vulnerabilities on Ubuntu 24.04 LTS (noble) |
|---|---|
| Advisory | USN-8793-1 |
| CVEs | CVE-2025-71289, CVE-2026-23469, CVE-2026-31420, CVE-2026-31486, CVE-2026-31560, CVE-2026-46158, CVE-2026-46170, CVE-2026-46275, CVE-2026-46315 |
| Authoritative release date | 2026-09-21 13:05:01.632989 UTC |
| Authority revision date | 2026-09-21 13:05:01.632989 UTC |
| Affected versions | The Ubuntu releases and packages enumerated in USN-8793-1: Ubuntu 24.04 LTS (noble). |
| Fixed version | noble: linux-azure-fde 6.8.0-1065.72 |
| CVSS base score | Not provided by the authority |
| CVSS severity | Not provided by the authority |
| Exploitation status | Not stated by the authority; no exploitation claim is inferred. |
What Changed
Several security issues were fixed in the Linux kernel. After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.
What To Validate Now
- Inventory. Locate Linux kernel (Azure CVM) vulnerabilities on Ubuntu 24.04 LTS (noble) deployments, versions, enabled features, exposure paths, owners, and dependent services.
- Establish applicability. Compare each deployment with the authority's affected-version statement: The Ubuntu releases and packages enumerated in USN-8793-1: Ubuntu 24.04 LTS (noble). Do not infer applicability from product family or severity alone.
- Remediate. Apply noble: linux-azure-fde 6.8.0-1065.72 through the supported vendor or project channel, following the current advisory and change-control requirements.
- Validate. Confirm the resulting version or managed-service state, exercise representative functionality and recovery paths, monitor for regressions, and document exceptions.
- Retain evidence. Preserve asset and owner identifiers, the applicability decision, before-and-after versions, change approval, installation output, validation results, and any exception or rollback record.
Operational Cautions
Use the exact supported release stream and repository. Test dependencies, clusters, integrations, and rollback before broad deployment; a CVSS rating or reachable feature is not evidence of exploitation.
Evidence To Retain
- Exact product, release stream, package or application version, enabled feature, environment, and accountable owner.
- UTC timestamps, authority revision, approved change record, installer or package-manager output, and resulting version.
- Relevant logs and monitoring evidence, test results, exceptions, compensating controls, and rollback decisions.
Related TechGeeks Resources
Authoritative References
Correction policy: If the authority changes affected versions, fixed versions, severity, exploitation information, mitigations, or required action, TechGeeks will update this notice and its verification date.
