VulnerabilityPublished 10 Jul 2026Updated 3 Nov 2026

CVE-2025-40005: linux-azure-fips, linux-fips vulnerabilities

Affects Linux kernelSource GCVE Database

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Not known to be exploited · fixed in 6.8.0-1062.69+fips1 : patch Linux kernel soon.

Data as of 3 Nov 2026, 17:36 UTC

Severity

High

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

Patch: Available – fixed in 6.8.0-1062.69+fips1, 6.8.0-134.134+fips1

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

usn-8492-5

What to do

Upgrade the Ubuntu to 6.8.0-1062.69+fips1 (linux-azure-fips package) or 6.8.0-134.134+fips1 (linux-fips package).

Patches and advisories

ubuntu.com/security/notices/USN-8492-5 (opens in a new tab)

Affected software

Product	Affected	Fixed in
Ubuntu Pro FIPS-updates 24.04 LTSlinux-azure-fips`pkg:deb/ubuntu/linux-azure-fips?arch=source&distro=fips-updates/noble`Other threats	Affected <6.8.0-1062.69+fips1	Fixed in 6.8.0-1062.69+fips1
Ubuntu Pro FIPS-updates 24.04 LTSlinux-fips`pkg:deb/ubuntu/linux-fips?arch=source&distro=fips-updates/noble`Other threats	Affected <6.8.0-134.134+fips1	Fixed in 6.8.0-134.134+fips1

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

AI-suggested

Apply the official security updates provided by Ubuntu Pro for the linux-azure-fips and linux-fips kernel packages. Specifically, update to versions 6.8.0-1062.69+fips1 or 6.8.0-134.134+fips1 or later. After updating, reboot the system to activate the patches. Recompile and reinstall any third-party kernel modules due to ABI changes introduced by the update. Follow the vendor advisory at https://ubuntu.com/security/notices/USN-8492-5 for detailed instructions.

Description

Multiple security vulnerabilities were discovered in the Linux kernel affecting a wide range of subsystems and architectures. These issues could potentially allow an attacker to compromise the system. The affected subsystems include various CPU architectures, device drivers, file systems, networking components, and kernel frameworks. A patch addressing these vulnerabilities is available and included in updated Linux kernel packages with FIPS certification for Ubuntu Pro users.

Impact

An attacker could potentially exploit these vulnerabilities to compromise the security of the affected Linux kernel systems. The broad range of affected subsystems indicates a wide attack surface, potentially impacting system stability, confidentiality, integrity, and availability. However, no known exploits in the wild have been reported at this time.

Summary

The Linux kernel (linux-azure-fips and linux-fips packages) contains numerous security flaws across many subsystems such as ARM64, MIPS, PowerPC, x86 architectures, block layer, cryptographic API, device drivers, file systems, networking stacks, and kernel infrastructure. These vulnerabilities collectively could be exploited by attackers to compromise affected systems. The issues are fixed in updated kernel versions 6.8.0-1062.69+fips1 and 6.8.0-134.134+fips1. The update requires a system reboot and recompilation of third-party kernel modules due to ABI changes. The fixes are distributed via Ubuntu Pro with FIPS-certified kernel packages.

References

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