CVE-2026-43019 POC (Proof-of-Concept)

In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_conn: fix potential UAF in set_cig_params_sync
hci_conn lookup and field access must be covered by hdev lock in
set_cig_params_sync, otherwise it's possible it is freed concurrently.
Take hdev lock to prevent hci_conn from being deleted or modified
concurrently. Just RCU lock is not suitable here, as we also want to
avoid "tearing" in the configuration.

Published: 2026-05-01

CVSS: 7.8

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

Download CVE-2026-43019 POC (Proof-of-Concept) here:

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https://hokyo.gr/poc-601-cve-2026-7957/

https://hokyo.gr/poc-515-cve-2026-43239/