kernel: Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue

A flaw was discovered in the Bluetooth subsystem of the Linux kernel. When processing a HCIEVNUMCOMPPKTS event, the function hciconntxdequeue did not properly hold or release the hdev device lock, which may lead to a use-after-free of the connection structure...

kernel: Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue

A flaw was discovered in the Bluetooth subsystem of the Linux kernel. When processing a HCIEVNUMCOMPPKTS event, the function hciconntxdequeue did not properly hold or release the hdev device lock, which may lead to a use-after-free of the connection structure...

EUVD-2025-34589

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: Fix UAF in hciconntxdequeue This fixes the following UAF caused by not properly locking hdev when processing HCIEVNUMCOMPPKTS: BUG: KASAN: slab-use-after-free in hciconntxdequeue+0x1be/0x220...