CVE-2026-23395
Gravedad:
Pendiente de análisis
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
25/03/2026
Última modificación:
25/03/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
Bluetooth: L2CAP: Fix accepting multiple L2CAP_ECRED_CONN_REQ<br />
<br />
Currently the code attempts to accept requests regardless of the<br />
command identifier which may cause multiple requests to be marked<br />
as pending (FLAG_DEFER_SETUP) which can cause more than<br />
L2CAP_ECRED_MAX_CID(5) to be allocated in l2cap_ecred_rsp_defer<br />
causing an overflow.<br />
<br />
The spec is quite clear that the same identifier shall not be used on<br />
subsequent requests:<br />
<br />
&#39;Within each signaling channel a different Identifier shall be used<br />
for each successive request or indication.&#39;<br />
https://www.bluetooth.com/wp-content/uploads/Files/Specification/HTML/Core-62/out/en/host/logical-link-control-and-adaptation-protocol-specification.html#UUID-32a25a06-4aa4-c6c7-77c5-dcfe3682355d<br />
<br />
So this attempts to check if there are any channels pending with the<br />
same identifier and rejects if any are found.
Impacto
Referencias a soluciones, herramientas e información
- https://git.kernel.org/stable/c/2124d82fd25e1671bb3ceb37998af5aae5903e06
- https://git.kernel.org/stable/c/5b3e2052334f2ff6d5200e952f4aa66994d09899
- https://git.kernel.org/stable/c/6b949a6b33cbdf621d9fc6f0c48ac00915dbf514
- https://git.kernel.org/stable/c/8d0d94f8ba5b3a0beec3b0da558b9bea48018117
- https://git.kernel.org/stable/c/e72ee455297b794b852e5cea8d2d7bb17312172a
- https://git.kernel.org/stable/c/fb4a3a26483f3ea2cd21c7a2f7c45d5670600465



