CVE-2026-74471tracing: Check return value of __register_event() in trace_module_add_events()
- 7.8HighCVSS base score
- 0.13%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: Check return value of __register_event() in trace_module_add_events() trace_module_add_events() ignores the return value of __register_event() and unconditionally calls __add_event_to_tracers() for each event. If __register_event() fails (for example, if event_init() fails), the trace_event_call is not added to ftrace_events list, but __add_event_to_tracers() still creates a trace_event_file pointing to it. If module loading subsequently fails and module memory is freed, tracing state retains a stale trace_event_call pointer in trace_event_file, leading to a use-after-free when tracefs or tracing subsystem operations are later executed. Fix this by checking the return value of __register_event() and only calling __add_event_to_tracers() if event registration succeeded.
Timeline
ID reserved
By Linux
Published
- 2 months later
· 2 months 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)
- 0.13% · top 98% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected ae63b31e4d0e2ec09c569306ea46f664508ef717 – < 3bf965a2827c44f03294107703e7ba53fbd0a69a
- affected ae63b31e4d0e2ec09c569306ea46f664508ef717 – < 9d6d79744f01eacaf3d5522f4fcd59939581abfd
- affected ae63b31e4d0e2ec09c569306ea46f664508ef717 – < 54b7a358f6399c1242d2fb7f4f96085af34baa5e
- affected ae63b31e4d0e2ec09c569306ea46f664508ef717 – < d61ee2a27dfd5eb43ddc18af40168f5b9eb1cea5
- affected ae63b31e4d0e2ec09c569306ea46f664508ef717 – < 22f954f7a8afe975e85517aff41b35defe05144b
- affected ae63b31e4d0e2ec09c569306ea46f664508ef717 – < cbb5ed3be9cae70e1c12b1991009b4e12bf4a4ca
- affected ae63b31e4d0e2ec09c569306ea46f664508ef717 – < 000765dcdc3edf128990762790543adc4b868f6c
- affected ae63b31e4d0e2ec09c569306ea46f664508ef717 – < ac8719969e6c3c54e939834df812bc41f25453cf
- affected 3.10
- unaffected < 3.10
- unaffected 5.10.265 – ≤ 5.10.*
- unaffected 5.15.216 – ≤ 5.15.*
- unaffected 6.1.183 – ≤ 6.1.*
- unaffected 6.6.151 – ≤ 6.6.*
- unaffected 6.12.103 – ≤ 6.12.*
- unaffected 6.18.44 – ≤ 6.18.*
- unaffected 7.1.8 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/3bf965a2827c44f03294107703e7ba53fbd0a69a (opens in a new tab)
- https://git.kernel.org/stable/c/9d6d79744f01eacaf3d5522f4fcd59939581abfd (opens in a new tab)
- https://git.kernel.org/stable/c/54b7a358f6399c1242d2fb7f4f96085af34baa5e (opens in a new tab)
- https://git.kernel.org/stable/c/d61ee2a27dfd5eb43ddc18af40168f5b9eb1cea5 (opens in a new tab)
- https://git.kernel.org/stable/c/22f954f7a8afe975e85517aff41b35defe05144b (opens in a new tab)
- https://git.kernel.org/stable/c/cbb5ed3be9cae70e1c12b1991009b4e12bf4a4ca (opens in a new tab)
- https://git.kernel.org/stable/c/000765dcdc3edf128990762790543adc4b868f6c (opens in a new tab)
- https://git.kernel.org/stable/c/ac8719969e6c3c54e939834df812bc41f25453cf (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-2026-59664 (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-2026-74471)Record last updated .