Improper control of a resource through its lifetime in Linux kernel - CVE-2026-80939
Published: September 13, 2026
Vulnerability identifier: #VU149456
CSH Severity: Low
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80939
CWE-ID: CWE-664
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to cause a denial of service.
The vulnerability exists due to improper resource shutdown in the rtw89 PCI driver's rfkill polling handler when the system performs a warm reboot. A local privileged user can initiate a warm reboot to cause a denial of service.
The issue occurs on arm64 platforms after the PCIe link has been torn down.
Affected software
Linux kernel
How to mitigate CVE-2026-80939
Install security update from vendor's repository.