CVE-2026-68177
- Source
- https://cve.org/CVERecord?id=CVE-2026-68177
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68177.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-68177
- Downstream
- Published
- 2026-08-10T11:59:48Z
- Modified
- 2026-08-18T03:31:03Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- tracing: Delay module ref count for "enable_event" trigger
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
tracing: Delay module ref count for "enable_event" trigger
Triggers are now delayed from freeing, but can still be triggered until after the RCU grace period has ended. The freeing of the enable_event data is put into the private_data_free() callback, but the put of the module refcount is done immediately.
It is possible that if a module is removed that has an event that would enable (or disable) it is still active, it can read the data of the module after it is removed causing a use-after-free bug.
Move the trace_event_put_ref() that releases the module into the delayed callback so that the module can not be removed until any reference to its events are finished.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68177.json" }- References
-
- https://git.kernel.org/stable/c/159fdc3e01dca5fdbc412fcd8b239895733a270d
- https://git.kernel.org/stable/c/e091351b38818ef620d27f44f4bfd625f13afbff
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68177.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-68177
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git