Double free in Linux kernel - CVE-2026-46316
Published: June 10, 2026
Vulnerability identifier: #VU134184
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-2026-46316
CWE-ID: CWE-415
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 double free in vgic_its_invalidate_cache() in the KVM arm64 vgic-its translation cache when invalidating cache entries concurrently. A local user can trigger concurrent cache invalidation paths to cause a denial of service.
The issue occurs because multiple contexts can drain the same cache at the same time, allowing an entry to be freed while an ITE still maps it.
How to mitigate CVE-2026-46316
Install security update from vendor's repository.