CVEvulnerability
CVE-2026-72334
8.8 HIGH
Official page ↗
- Status
- Received
- Published
- 2026-08-15
- Last modified
- 2026-10-16
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 8.8 HIGH — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: ISO: fix malformed ISO_END/CONT handling
Core specification (Part C vol 4 sec 5.4.5) does not exclude empty
ISO_CONT, ISO_END packets. We currently reject them if they are last.
If controller sends malformed sequence
ISO_START -> rx_len = 4, ISO_CONT skb->len 4, ISO_START
that ends payload in ISO_CONT, we leak conn->rx_skb. If controller sends
too long ISO_END, we panic on skb_put. If controller sends too short
ISO_END we accept it.
Fix by marking unfinished ISO_START via conn->rx_skb != NULL. Check
skb->len properly before skb_put. Combine the ISO_CONT/END code paths
as they require the same initial checks. Reject too short ISO_END
packets.
References
- https://git.kernel.org/stable/c/49aeb54e3c912ef785311264a51ab9f3698e421b git.kernel.org
- https://git.kernel.org/stable/c/5e53e285f8c989662e34d4938c728a94226bff34 git.kernel.org
- https://git.kernel.org/stable/c/7250b6b5ba9b737cff2c2c1d0760360c7b6bca00 git.kernel.org
- https://git.kernel.org/stable/c/990e65eb9387c4ddfa7f68782b6644c2c35d489f git.kernel.org
- https://git.kernel.org/stable/c/d2df29dc9abda2fc10ff522eac0969f5b77b3637 git.kernel.org
- https://git.kernel.org/stable/c/e054c1a6ae7310d2815778fddb87da616e11c255 git.kernel.org