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VulnerabilityPublished Updated

CVE-2025-37797: linux-realtime vulnerabilities

Affects Linux kernelSource GCVE Database

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Mentioned vulnerabilities

Not known to be exploited : upgrade to 6.8.1-1026.27 soon.

Data as of 31 Oct 2026, 01:40 UTC

Severity
High

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

Patch
Available – fixed in 6.8.1-1026.27

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 31 Jul 2025

  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 30 Oct 2026.

What to do

Upgrade the Ubuntu linux-realtime package to 6.8.1-1026.27.

Affected software

ProductAffectedFixed in
Ubuntu Pro Realtime 24.04 LTSlinux-realtimepkg:deb/ubuntu/linux-realtime?arch=source&distro=realtime/nobleOther threatsAffected
  • <6.8.1-1026.27
Fixed in
  • 6.8.1-1026.27

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 in linux-realtime kernel version 6.8.1-1026.27. Users should update their systems to this version and reboot to apply the fixes. Due to an ABI change, all third-party kernel modules must be recompiled and reinstalled after the update. Standard system upgrades will handle this automatically unless the standard kernel metapackages have been manually removed.

Description

Multiple security vulnerabilities were discovered in the Linux kernel's real-time variant, specifically affecting the network traffic control subsystem. These flaws could potentially allow an attacker to compromise the system. A patch addressing these issues is available in version 6.8.1-1026.27 of the linux-realtime kernel. Users must update to this version and reboot their systems. Due to an ABI change, recompilation and reinstallation of third-party kernel modules are required after the update.

References

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