CVE-2026-43019 — Bluetooth: hci_conn: fix potential UAF in set_cig_params_sync
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 cove…
Published: 2026-05-01 · CVSS: 7.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7