CVEvulnerability
CVE-2026-74530
8.8 HIGH
Official page ↗
- Status
- Received
- Published
- 2026-08-15
- Last modified
- 2026-10-21
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 8.8 HIGH — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_sync: hold conn in hci_connect_big_sync() callback
There is theoretical UAF if the conn is freed while the hci_sync task is
running.
Hold refcount to avoid that. Handle NULL hcon, return 0 + do nothing to
match the previous behavior.
References
- https://git.kernel.org/stable/c/117d8bcaf1abc348185e8ab6a4ba9f8f516849a0 git.kernel.org
- https://git.kernel.org/stable/c/2d91e6244b69d752503b2d44020d8b0e323dbd38 git.kernel.org
- https://git.kernel.org/stable/c/56e78b670356caab0b607e8aad4cf819a1909d07 git.kernel.org
- https://git.kernel.org/stable/c/ff5625d27415ace5667bf87ebc16c3a0a98db22f git.kernel.org