Use-after-free in Linux kernel - CVE-2026-43322
Published: May 9, 2026
Vulnerability identifier: #VU130866
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-43322
CWE-ID: CWE-416
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 use-after-free in le_read_features_complete in the Bluetooth hci_sync subsystem when processing Bluetooth Low Energy remote feature completion events. A local user can trigger a race condition that causes a freed hci_conn object to be accessed to cause a denial of service.
How to mitigate CVE-2026-43322
Install security update from vendor's repository.