Use-after-free in Linux kernel - CVE-2026-80762
Published: September 6, 2026
Vulnerability identifier: #VU147157
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80762
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to use-after-free in the Bluetooth hci_update_event_filter_sync() accept-list handling when suspending a Bluetooth controller while an accept-list device is concurrently removed. A local user can trigger concurrent accept-list removal during a controller wait to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-80762
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/29c59212a507804d7616b8abf491d30b4ab8e75f
- https://git.kernel.org/stable/c/87ad116ac3abc6f2ce2b5b6c488f633003581eee
- https://git.kernel.org/stable/c/95bb57bc11a91caf042ad00fca85e480d3fda37f
- https://git.kernel.org/stable/c/b5181516a9f5c2fdb3271cdad72a5b16c6963a44
- https://git.kernel.org/stable/c/bb5f5414d1a6272a16f68684e998f4063dd19f57
- https://git.kernel.org/stable/c/f57b399c4fa1501b2d5451f52d861ece86bcf3db
- https://git.kernel.org/stable/c/fe93a697a7a92fa9adf78c9ff67a10db3193290c