CVE-2026-97499
Gravedad:
Pendiente de análisis
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
24/09/2026
Última modificación:
24/09/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
coresight: perf: Retrieve path and source from event data<br />
<br />
ETM perf callbacks currently use the per-CPU csdev_src pointer, which<br />
can race with updates during device registration and unregistration.<br />
<br />
The AUX setup already builds and stores the path in the event data.<br />
Use this path to retrieve the source instead of csdev_src to avoid<br />
the race.<br />
<br />
Export coresight_get_source() and add etm_event_get_ctxt_path() to<br />
retrieve the context&#39;s path and its source with READ_ONCE() /<br />
WRITE_ONCE() accessors. Give the comments to explain why this<br />
approach is safe when pause or resume callbacks preempt the disable<br />
callback (e.g. via NMI).


