CVE-2026-97936: Linux kernel · tracing: Fix memory corruption from the histogram stacktrace modifier
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 12:55 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 9% 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 for this vulnerability has been implemented in the affected Linux kernel versions by enforcing validation that the histogram stacktrace modifier only accepts fields holding valid stacktraces. Users should apply the official kernel updates that include this fix. Since this is not a cloud service, remediation requires updating the affected kernel versions. Patch status is not explicitly confirmed in the input data; users should consult the vendor advisory for the latest remediation guidance.
Description
A memory corruption vulnerability in the Linux kernel's tracing subsystem was fixed. The issue arises from improper handling of the histogram stacktrace modifier, which can lead to out-of-bounds memory access during event histogram triggering. This can cause kernel crashes such as NULL pointer dereferences. The vulnerability affects specific versions of the linux-hwe-edge kernel. The flaw is addressed by enforcing that only fields holding valid stacktraces are accepted.
References
- ubuntu.com/security/CVE-2026-97936 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-97936 (opens in a new tab)
- git.kernel.org/stable/c/e183b84968d4a6ea476d806ea97668405aa56880 (opens in a new tab)
- git.kernel.org/stable/c/55caaf25da2c2bb9b75307e4c868726cb954b1d6 (opens in a new tab)
- git.kernel.org/stable/c/57bfc2a17954d173d2a4182f3b582ffbb23aff64 (opens in a new tab)
- git.kernel.org/stable/c/a5e70ba87ca8ebc79b4e63de302d03b0625fe153 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-97936 (opens in a new tab)
- git.kernel.org/stable/c/98da3379cdee343f671dac89b9afbd8b071f2591 (opens in a new tab)