CVE-2026-74608
Gravedad:
Pendiente de análisis
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
22/08/2026
Última modificación:
22/08/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
smb: client: Fix use-after-free in cifs_try_adding_channels()<br />
<br />
cifs_try_adding_channels() takes a temporary reference to an interface<br />
before dropping iface_lock. If cifs_ses_add_channel() fails, it drops<br />
that reference and then increments iface->weight_fulfilled.<br />
<br />
A concurrent interface list refresh can remove the list reference while<br />
channel creation is in progress. In that case, the failure-path<br />
kref_put() releases the last reference and frees iface. Updating<br />
weight_fulfilled afterward then accesses freed memory.<br />
<br />
Increment weight_fulfilled before dropping the temporary reference,<br />
keeping iface alive for the final access.
Impacto
Referencias a soluciones, herramientas e información
- https://git.kernel.org/stable/c/1305eadc6a7d78a8d0a52eee29ddd2d9e8a27805
- https://git.kernel.org/stable/c/1ffacbadc14530e55b8d86f7b917524f6a0fb891
- https://git.kernel.org/stable/c/47dfac48bce7198ad4f1a388fc8c9491f878ac3b
- https://git.kernel.org/stable/c/4986410316b1ae0e63c6ce418e4eb196723626e7
- https://git.kernel.org/stable/c/64d7584e62ac8cdc750455c5fdc6008fc2de4f06
- https://git.kernel.org/stable/c/c292d4686f717c03e5022fc4ae7c782f39a94915


