CVE-2026-31431: Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability
Summary
The Linux Kernel has a vulnerability known as "Incorrect Resource Transfer Between Spheres" that could allow for privilege escalation. CISA has added this to its Known Exploited Vulnerabilities (KEV) catalog and requires federal agencies to apply mitigations by May 15, 2026.
IFF Assessment
This vulnerability allows for privilege escalation, which is a significant threat to system security and allows attackers to gain elevated access.
Severity
The vulnerability involves incorrect resource transfer between spheres and could lead to privilege escalation, indicating a high impact on confidentiality and integrity, with a likely attack vector that does not require privileges and is reasonably complex to exploit.
CISA KEV: Listed as actively exploited. Federal patch due: May 15, 2026. Known ransomware use: Unknown.
Defender Context
This CVE highlights the ongoing risk of privilege escalation vulnerabilities in core operating system components like the Linux Kernel. Defenders should prioritize patching and implementing mitigations for such issues, especially given its inclusion in CISA's KEV catalog, which signifies known exploitation.