CVE-2026-43447
Gravedad CVSS v3.1:
ALTA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
08/05/2026
Última modificación:
12/05/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
iavf: fix PTP use-after-free during reset<br />
<br />
Commit 7c01dbfc8a1c5f ("iavf: periodically cache PHC time") introduced a<br />
worker to cache PHC time, but failed to stop it during reset or disable.<br />
<br />
This creates a race condition where `iavf_reset_task()` or<br />
`iavf_disable_vf()` free adapter resources (AQ) while the worker is still<br />
running. If the worker triggers `iavf_queue_ptp_cmd()` during teardown, it<br />
accesses freed memory/locks, leading to a crash.<br />
<br />
Fix this by calling `iavf_ptp_release()` before tearing down the adapter.<br />
This ensures `ptp_clock_unregister()` synchronously cancels the worker and<br />
cleans up the chardev before the backing resources are destroyed.
Impacto
Puntuación base 3.x
7.80
Gravedad 3.x
ALTA