CVE-2026-80572
Gravedad CVSS v3.1:
ALTA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
26/08/2026
Última modificación:
27/08/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
Input: byd - synchronize timer deletion before freeing private data<br />
<br />
byd_disconnect() uses timer_delete() before freeing the driver&#39;s private<br />
data. This does not wait for a running byd_clear_touch() callback, which<br />
dereferences the private data and its psmouse pointer. A callback racing<br />
with disconnect can therefore access the private data after it has been<br />
freed. The timer can also still be re-armed by byd_process_byte() while<br />
the disconnect is in progress.<br />
<br />
Use timer_shutdown_sync() before freeing the private data: it waits for<br />
a running callback and turns any later re-arm attempt into a no-op.
Impacto
Puntuación base 3.x
7.80
Gravedad 3.x
ALTA
Referencias a soluciones, herramientas e información
- https://git.kernel.org/stable/c/28d984a66b9e14be74986167b6ad40b5e0daf19a
- https://git.kernel.org/stable/c/2e509ef60ee41a2da0deb062c262bb530143fb37
- https://git.kernel.org/stable/c/84b205297fa15f97510342221d8c9a0119711478
- https://git.kernel.org/stable/c/8dbfd8e32a13e116790780ed0be82b5a05eb9916
- https://git.kernel.org/stable/c/c83e79c0842ed29860648bcce5022ef0ba5001c6
- https://git.kernel.org/stable/c/ee944a706a18322b4a2599eebe8040a2994e928f



