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VulnerabilityPublished Updated

CVE-2025-40246: linux-azure, linux-azure-6.17 vulnerabilities

Affects Linux kernelSource GCVE Database

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Not known to be exploited · fixed in 6.17.0-1010.10~24.04.1 : patch Linux kernel soon.

Data as of 3 Nov 2026, 17:29 UTC

Severity
High

Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Patch
Available – fixed in 6.17.0-1010.10~24.04.1, 6.17.0-1010.10

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.

What to do

Upgrade the Ubuntu to 6.17.0-1010.10~24.04.1 (linux-azure-6.17 package) or 6.17.0-1010.10 (linux-azure package).

Affected software

ProductAffectedFixed in
Ubuntu 25.10linux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=questingOther threatsAffected
  • <6.17.0-1010.10
Fixed in
  • 6.17.0-1010.10
Ubuntu 24.04 LTSlinux-azure-6.17pkg:deb/ubuntu/linux-azure-6.17?arch=source&distro=nobleOther threatsAffected
  • <6.17.0-1010.10~24.04.1
Fixed in
  • 6.17.0-1010.10~24.04.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A patch is available and should be applied by updating to linux-azure-6.17 kernel versions 6.17.0-1010.10~24.04.1 or 6.17.0-1010.10 as provided by the Ubuntu security notice USN-8094-4. After updating, a system reboot is required. Due to an ABI change, third-party kernel modules must be recompiled and reinstalled. Follow the vendor's update instructions carefully to ensure full remediation.

Description

Multiple vulnerabilities were discovered in the Linux kernel for Azure cloud systems, including issues in the AppArmor Linux Security Module that allow local unprivileged attackers to manipulate AppArmor profiles, potentially causing denial of service, information exposure, privilege escalation, or container escape. Additionally, some AMD Zen 5 processors with RDSEED instruction mishandle entropy, risking confidentiality and integrity. Numerous other kernel subsystems and drivers were also affected by various security flaws. These issues have been addressed in updated linux-azure-6.17 kernel packages.

References

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