CVE-2025-38561: linux-realtime, linux-intel-iot-realtime vulnerabilities
Affects Linux kernelSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · fixed in 5.15.0-1091.93 : patch Linux kernel soon.
Data as of 3 Nov 2026, 17:43 UTC
Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
- Patch
- Available – fixed in 5.15.0-1091.93, 5.15.0-1098.107
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 the Ubuntu to 5.15.0-1091.93 (linux-intel-iot-realtime package) or 5.15.0-1098.107 (linux-realtime package).
Patches and advisories
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu Pro Realtime 22.04 LTSlinux-intel-iot-realtimepkg:deb/ubuntu/linux-intel-iot-realtime?arch=source&distro=realtime/jammyOther threats | Affected
| Fixed in
|
Ubuntu Pro Realtime 22.04 LTSlinux-realtimepkg:deb/ubuntu/linux-realtime?arch=source&distro=realtime/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 kernel versions 5.15.0-1091.93 or 5.15.0-1098.107 or later as provided by Ubuntu's security notices. 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. Following these steps will mitigate the vulnerabilities.
Description
Multiple security vulnerabilities were discovered in the Linux kernel affecting the Cryptographic API and SMB network file system subsystems. These issues could allow an attacker to compromise affected systems running certain versions of the linux-intel-iot-realtime and linux-realtime kernels. The vulnerabilities are addressed in updated kernel versions released by Ubuntu for their 22.04 LTS distribution.