Memory leak in Linux kernel - CVE-2026-90252
Published: September 18, 2026
Vulnerability identifier: #VU151230
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90252
CWE-ID: CWE-401
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 improper resource cleanup in the Bluetooth management HCI command synchronization handler when a pending HCI command is canceled. A local user can issue a management HCI command synchronization request to cause a denial of service.
Controller unregistration cancels all pending command entries.
Affected software
Linux kernel
How to mitigate CVE-2026-90252
Install security update from vendor's repository.