Improper control of a resource through its lifetime in Linux kernel - CVE-2026-43347
Published: May 9, 2026
Vulnerability identifier: #VU130840
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-2026-43347
CWE-ID: CWE-664
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 improper memory reservation in arm64 device tree memory handling for qcom monaco platforms when managing hypervisor-owned memory regions. A local user can trigger access to incorrectly unreserved hypervisor-owned memory to cause a denial of service.
The issue occurs on Monaco-based platforms where part of the Gunyah hypervisor metadata region is reported as conventional memory instead of reserved memory.
How to mitigate CVE-2026-43347
Install security update from vendor's repository.