CVE-2026-63822
Gravedad:
Pendiente de análisis
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
19/07/2026
Última modificación:
19/07/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
wifi: ath11k: fix warning when unbinding<br />
<br />
If there is an error during some initialization related to firmware,<br />
the buffers dp->tx_ring[i].tx_status are released.<br />
However this is released again when the device is unbinded (ath11k_pci),<br />
and we get:<br />
WARNING: CPU: 0 PID: 6231 at mm/slub.c:4368 free_large_kmalloc+0x57/0x90<br />
Call Trace:<br />
free_large_kmalloc<br />
ath11k_dp_free<br />
ath11k_core_deinit<br />
ath11k_pci_remove<br />
...<br />
<br />
The issue is always reproducible from a VM because the MSI addressing<br />
initialization is failing.<br />
<br />
In order to fix the issue, just set the buffers to NULL after releasing in<br />
order to avoid the double free.
Impacto
Referencias a soluciones, herramientas e información
- https://git.kernel.org/stable/c/051f954b94479d72222c9fbc82a3eef4777bca01
- https://git.kernel.org/stable/c/0a946abb82f29abe9a15173b707a449cb039b43e
- https://git.kernel.org/stable/c/0aa097a370277deab5337030b9e2d395742f469c
- https://git.kernel.org/stable/c/318703b6f71d1a29ee0ac46c32a38f7734d4cfb2
- https://git.kernel.org/stable/c/40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a
- https://git.kernel.org/stable/c/7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13
- https://git.kernel.org/stable/c/8b7a26b6681922a38cd5a7829ace61f8e54df9b7
- https://git.kernel.org/stable/c/e569a5cb401a267168621aa9a1e7f07fcc9612c3



