Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: coresight: perf: Retrieve path and source from event data ETM perf callbacks currently use the per-CPU csdev_src pointer, which can race with updates during device registration and unregistration. The AUX setup already builds and stores the path in the event data. Use this path to retrieve the source instead of csdev_src to avoid the race. Export coresight_get_source() and add etm_event_get_ctxt_path() to retrieve the context's path and its source with READ_ONCE() / WRITE_ONCE() accessors. Give the comments to explain why this approach is safe when pause or resume callbacks preempt the disable callback (e.g. via NMI).
References
- https://git.kernel.org/stable/c/0f4cb08f30011b7625a4fba668fa5c36da5e6637
- https://git.kernel.org/stable/c/f37bc31447c0ddafedb25e3c4a4f4e2284034247
FAQ
What is CVE-2026-97499?
CVE-2026-97499 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: coresight: perf: Retrieve path and source from event data ETM perf callbacks currently use the per-CPU csdev_src pointer, which ca...
How severe is CVE-2026-97499?
CVSS scoring is not yet available for CVE-2026-97499. Check NVD for updates.
Is there a patch for CVE-2026-97499?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.