CVE-2026-74302
Description
AI Translation Available
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_core: Fix UAF in hci_unregister_dev()
hci_unregister_dev() does not disable cmd_timer and ncmd_timer
before the hci_dev structure is freed. If a timeout fires
during device teardown, the callback dereferences freed memory
(including the hdev->reset function pointer), leading to a
use-after-free.
Add disable_delayed_work_sync() calls alongside the existing
disable_work_sync() calls to ensure both timers are fully
quiesced before teardown proceeds.
https://git.kernel.org/stable/c/48c7ad6afcc58c2cda11fed39791708103b6a644
https://git.kernel.org/stable/c/5edcc018fa6e80b2c478454a4a8229c23d67c181
https://git.kernel.org/stable/c/672d52d9412252e61b8de8d773ccdf5a277cf540
https://git.kernel.org/stable/c/a0fd1086a57b982f8c24ae4ab165c2af39fe1735