Race condition in Linux kernel - CVE-2026-98297
Published: October 7, 2026
Vulnerability identifier: #VU153724
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-2026-98297
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disrupt Bluetooth data transmission.
The vulnerability exists due to a race condition in the Bluetooth hci_send_acl(), hci_send_sco(), and hci_send_iso() functions when socket writes occur concurrently with HCI device shutdown and workqueue draining. A local user can trigger Bluetooth socket writes during workqueue draining to disrupt Bluetooth data transmission.
Affected software
Linux kernel
How to mitigate CVE-2026-98297
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3