CVE-2025-40018: linux, linux-aws, linux-gcp, linux-realtime vulnerabilities
Affects Linux kernelSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · fixed in 6.17.0-8.8 : 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 6.17.0-8.8, 6.17.0-1005.5, 6.17.0-1004.5
Exploitation evidence
Disclosed: evidence found.
CVE published 10 Dec 2025
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 6.17.0-8.8 (linux package) or 6.17.0-1005.5 (linux-aws package, linux-gcp package) or 6.17.0-1004.5 (linux-realtime package).
Patches and advisories
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 25.10linuxpkg:deb/ubuntu/linux?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-realtimepkg:deb/ubuntu/linux-realtime?arch=source&distro=questingOther 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 users should update their Linux kernel to versions 6.17.0-8.8, 6.17.0-1005.5, or 6.17.0-1004.5 as appropriate for their environment. After updating, a system reboot is required to apply 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 tracing infrastructure and Netfilter subsystems. These flaws could potentially allow an attacker to compromise the system. The issues have been addressed in updated Linux kernel versions, and users are advised to apply the updates and reboot their systems. Due to an ABI change, recompilation and reinstallation of third-party kernel modules may be necessary.