Memory leak in Linux kernel - CVE-2026-53364
Published: July 14, 2026
Vulnerability identifier: #VU137402
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-53364
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a memory leak in hci_le_big_terminate() in the bluetooth hci connection handling component when terminating BIG synchronization state. A local user can trigger the affected code path to cause a denial of service.
The issue occurs on an early-return path when neither PA sync termination nor BIG sync termination flags are set.
How to mitigate CVE-2026-53364
Install security update from vendor's repository.