Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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&amp;#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.