CVE-2026-98294
kernel: Bluetooth: hci_qca: Do not write to the serial port after it is closed
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 6, 2026
Updated · October 11, 2026
Description
A flaw was found in the Linux kernel's Qualcomm Bluetooth driver. Under specific error-recovery conditions, unbinding the driver after a device failure causes the system to write data to an already closed serial port. A local user could trigger this condition, resulting in a null-pointer dereference that crashes the system and causes a Denial of Service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference