CVE-2026-92522 Linux CVE debrief

Who should care

Defenders and administrators responsible for Linux kernel systems, especially those using ACPI processor functionality, should verify and apply patches, monitor system logs, and assess exposure in Linux kernel environments. This includes operators, platform administrators, vulnerability management teams, and security teams who need to review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. They should

Why it matters

CVE-2026-92522 is a HIGH-severity vulnerability in the Linux kernel affecting ACPI processor validation of MADT IOAPIC entry bounds. Defenders should verify and apply patches, monitor system logs, and assess exposure in Linux kernel environments.

• Verify patch application to prevent potential system instability
• Monitor system logs for suspicious activity related to ACPI processor and IOAPIC interactions

Technical summary

The Linux kernel vulnerability CVE-2026-92522 involves improper validation of MADT IOAPIC entry bounds in ACPI processor. This issue has been resolved through specific commits. The vulnerability affects ACPI processor functionality and could lead to potential system instability. Defenders should prioritize verifying and applying patches for Linux kernel versions potentially impacted by this vulnerability. The CVE record and NVD detail page provide information on this vulnerability, including its CVSS score and severity.

Defensive priority

Defenders should prioritize verifying and applying patches for Linux kernel versions potentially impacted by this vulnerability.

Recommended defensive actions

• Verify Linux kernel versions for potential impact
• Apply patches from official sources
• Monitor system logs for suspicious activity
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD detail page provide information on this vulnerability, including its CVSS score and severity. Multiple source references from git.kernel.org are available, detailing specific commits addressing the issue.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.