CVE-2026-97920: Linux kernel · tracing: Keep the entry count when the histogram stats allocation fails
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 14:05 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 is available that separates the error return from the entry count variable to prevent out-of-bounds access. Users should apply the updated linux-hwe-edge kernel versions that include this fix. No additional mitigation is indicated by the vendor advisory.
Description
A vulnerability in the Linux kernel tracing subsystem causes improper handling of error conditions during histogram stats allocation. Specifically, when allocation fails, an error code overwrites the entry count used for cleanup, leading to out-of-bounds memory access and potential kernel crashes. This issue affects specific linux-hwe-edge kernel versions and has been resolved by separating the error return from the entry count variable.
References
- ubuntu.com/security/CVE-2026-97920 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-97920 (opens in a new tab)
- git.kernel.org/stable/c/17e87ce55f877efff1b08fe509e8bf91378cbbc9 (opens in a new tab)
- git.kernel.org/stable/c/06f5634ec5584954177f9a22e36b3bfb398a971b (opens in a new tab)
- git.kernel.org/stable/c/c80b2a8067d58ff7d268ceef781c68b37a16c321 (opens in a new tab)
- git.kernel.org/stable/c/9bd8321f5370295d1ae96dd17d43be3c9edd441b (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-97920 (opens in a new tab)
- git.kernel.org/stable/c/89c978d67ad01ce28223944cc58e95feea177b35 (opens in a new tab)
- git.kernel.org/stable/c/fe05eeed27128e17d38dbc0af02e4470bcecda89 (opens in a new tab)