CVE-2026-43062 POC (Proof-of-Concept)

In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: Fix type confusion in l2cap_ecred_reconf_rsp()
l2cap_ecred_reconf_rsp() casts the incoming data to struct
l2cap_ecred_conn_rsp (the ECRED *connection* response, 8 bytes with
result at offset 6) instead of struct l2cap_ecred_reconf_rsp (2 bytes
with result at offset 0).
This causes two problems:
- The sizeof(*rsp) length check requires 8 bytes instead of the
correct 2, so valid L2CAP_ECRED_RECONF_RSP packets are rejected
with -EPROTO.
- rsp->result reads from offset 6 instead of offset 0, returning
wrong data when the packet is large enough to pass the check.
Fix by using the correct type. Also pass the already byte-swapped
result variable to BT_DBG instead of the raw __le16 field.

Published: 2026-05-05

CVSS: 7.1

CVSS Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

Download CVE-2026-43062 POC (Proof-of-Concept) here:

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https://hokyo.gr/poc-665-cve-2026-41640/

https://hokyo.gr/poc-488-cve-2026-43184/

https://hokyo.gr/poc-658-cve-2026-40982/

https://hokyo.gr/poc-710-cve-2026-8092/