CVE-2026-31431: Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability

Added to the CISA Known Exploited Vulnerabilities catalog on 01 May 2026. Vendor: Linux. Product: Kernel.

Linux Kernel contains an incorrect resource transfer between spheres vulnerability that could allow for privilege escalation.

Required action: "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. (due 15 May 2026)