Improper Initialization in Linux kernel - CVE-2026-43351
Published: May 9, 2026
Vulnerability identifier: #VU130831
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-2026-43351
CWE-ID: CWE-665
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 initialization in the KVM arm64 vgic distributor/redistributor initialization logic when creating a virtual GIC device. A local user can trigger an error during vgic creation to cause a denial of service.
The issue occurs because teardown may access uninitialized rd_regions after an early failure in kvm_vgic_create().
How to mitigate CVE-2026-43351
Install security update from vendor's repository.