CVE-2026-97918: Linux kernel · tracing: Undo the registration when enabling the histogram trigger fails
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 17:16 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 25 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther 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 fix has been implemented in the Linux kernel to address this vulnerability by correcting the trigger registration and cleanup process. Users should update to the fixed kernel versions provided by their Linux distribution. Since this is not a cloud service, remediation depends on applying the official kernel updates.
Description
A use-after-free vulnerability in the Linux kernel's tracing subsystem was resolved by ensuring proper undoing of trigger registration when enabling a histogram trigger fails. The flaw involved improper handling of triggers that were freed while still referenced in global lists, leading to potential memory corruption. The fix ensures that triggers remain registered until properly unregistered, preventing use-after-free conditions.
References
- ubuntu.com/security/CVE-2026-97918 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-97918 (opens in a new tab)
- git.kernel.org/stable/c/51b07104d563d4be2be34158d3b9d922ca417642 (opens in a new tab)
- git.kernel.org/stable/c/92383cef66791a0c63a2f27755cadbdb2fbf270b (opens in a new tab)
- git.kernel.org/stable/c/bfa6bc11aef93a3d9db0ac9564b734849a9d959b (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-97918 (opens in a new tab)
- git.kernel.org/stable/c/c7ee2d5733574d4694f7c0035e4381f54c1fca27 (opens in a new tab)