Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability
Known exploited
CVE-2026-31431
Summary
Linux Kernel contains an incorrect resource transfer between spheres vulnerability that could allow for privilege escalation.
Why it matters
CVE-2026-31431 is listed in CISA's Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. CISA remediation deadline: 2026-05-15. Treat remediation as urgent.
Operator check
"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.