CVE-2025-38561: linux-fips, linux-aws-fips, linux-azure-fips, linux-gcp-fips vulnerabilities
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 5.15.0-1099.106+fips1 : patch Linux kernel soon.
Data as of 3 Nov 2026, 17:31 UTC
Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
- Patch
- Available – fixed in 5.15.0-1099.106+fips1, 5.15.0-1103.112+fips1, 5.15.0-168.178+fips1 +1
Exploitation evidence
Disclosed: evidence found.
CVE published 4 Feb 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.
What to do
Upgrade to a fixed release listed under Affected software.
Patches and advisories
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu Pro FIPS-updates 22.04 LTSlinux-aws-fipspkg:deb/ubuntu/linux-aws-fips?arch=source&distro=fips-updates/jammyOther threats | Affected
| Fixed in
|
Ubuntu Pro FIPS-updates 22.04 LTSlinux-azure-fipspkg:deb/ubuntu/linux-azure-fips?arch=source&distro=fips-updates/jammyOther threats | Affected
| Fixed in
|
Ubuntu Pro FIPS-updates 22.04 LTSlinux-fipspkg:deb/ubuntu/linux-fips?arch=source&distro=fips-updates/jammyOther threats | Affected
| Fixed in
|
Ubuntu Pro FIPS-updates 22.04 LTSlinux-gcp-fipspkg:deb/ubuntu/linux-gcp-fips?arch=source&distro=fips-updates/jammyOther threats | Affected
| Fixed in
|
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 promptly. Users should update their systems to the fixed kernel versions listed in the Ubuntu advisory (5.15.0-1099.106+fips1, 5.15.0-1103.112+fips1, 5.15.0-168.178+fips1, 5.15.0-1099.108+fips1). After updating, a system reboot is required to activate the fixes. Due to an ABI change, all third-party kernel modules must be recompiled and reinstalled. Standard system upgrades will handle this automatically unless kernel metapackages have been manually removed.
Description
Multiple security vulnerabilities were discovered in the Linux kernel affecting the Cryptographic API and SMB network file system subsystems. These flaws could potentially allow an attacker to compromise the affected system. The vulnerabilities impact various FIPS-certified Linux kernel packages used in AWS, Azure, GCP, and standard Linux environments. Fixes have been released and are available through Ubuntu Pro updates. A system reboot and recompilation of third-party kernel modules are required after applying the updates.