CVE-2026-99237tracing: Hold trace_types_lock when resetting last boot data from readers
- 7.8HighCVSS base score
- 0.12%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: tracing: Hold trace_types_lock when resetting last boot data from readers update_last_data_if_empty() is called from tracing_open() with O_TRUNC, tracing_read_pipe() and tracing_buffers_read() without trace_types_lock. Two readers can both pass the LAST_BOOT test and free module_delta twice, and a module notifier can update module_delta while it is being freed. Take trace_types_lock in those paths and keep the callers that already hold it on an unlocked variant.
Timeline
ID reserved
By Linux
- 38 days later
· 38 days later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 32dc0042528d385d83bf458e4cf3a49c5110afea – < 92b69f6db640dadc0851762ee2e12db99f083cad
- affected 32dc0042528d385d83bf458e4cf3a49c5110afea – < d6d991afe775ab7fcf89523a2502b7ca3be56ffd
- affected 32dc0042528d385d83bf458e4cf3a49c5110afea – < 1f06cfe0b60a878619d1d8efe1cd0f515b7dc2aa
- affected 32dc0042528d385d83bf458e4cf3a49c5110afea – < 5a6bd62f09147b49b31fd19d4eba122cb5f941a1
- affected 6.16
- unaffected < 6.16
- unaffected 6.18.60 – ≤ 6.18.*
- unaffected 7.2.14 – ≤ 7.2.*
- unaffected 7.3.1 – ≤ 7.3.*
- unaffected 7.4-rc1 – ≤ *
References
References4
- https://git.kernel.org/stable/c/92b69f6db640dadc0851762ee2e12db99f083cad (opens in a new tab)
- https://git.kernel.org/stable/c/d6d991afe775ab7fcf89523a2502b7ca3be56ffd (opens in a new tab)
- https://git.kernel.org/stable/c/1f06cfe0b60a878619d1d8efe1cd0f515b7dc2aa (opens in a new tab)
- https://git.kernel.org/stable/c/5a6bd62f09147b49b31fd19d4eba122cb5f941a1 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-115279 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-99237)Record last updated .