CVE-2026-97919: Linux kernel · tracing: Take the reference before publishing the named histogram trigger
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 that changes the order of operations to take the reference before publishing the trigger, preventing use-after-free. Users should apply the official kernel updates that include this fix. Since this is a kernel vulnerability, updating to a patched kernel version is the recommended remediation. Patch status is not explicitly stated in the input, so verify with the vendor advisory for the latest remediation guidance.
Description
A use-after-free vulnerability in the Linux kernel's tracing subsystem was resolved. The issue occurs because the reference to a named histogram trigger is taken only after it is published to a global list, which can lead to a freed object being accessed during subsequent lookups. This flaw can cause kernel memory corruption and instability. The fix involves taking the reference before publishing the trigger, preventing access to freed memory.
References
- ubuntu.com/security/CVE-2026-97919 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-97919 (opens in a new tab)
- git.kernel.org/stable/c/2ffaade3611bd9501bc0b9d5d19fc75bfee7a16b (opens in a new tab)
- git.kernel.org/stable/c/0fe23b8eaba0d3372c66b7b31204408da0715edc (opens in a new tab)
- git.kernel.org/stable/c/91c15cdda6033e2439f5975b938754152f3d6e38 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-97919 (opens in a new tab)
- git.kernel.org/stable/c/b6fb2f5370a9a6aec325ab2db1ca3d1a881499b8 (opens in a new tab)