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CVE-2026-92522

7.3 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ACPI: processor: validate MADT IOAPIC entry bounds The IOAPIC hotplug lookup parses both MADT and _MAT records directly.

Published Sep 17, 2026EPSS 0.14%

Overview

CVE-2026-92522 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

ACPI: processor: validate MADT IOAPIC entry bounds

The IOAPIC hotplug lookup parses both MADT and _MAT records directly.

The MADT walk previously used a subtable's declared length to advance

the cursor after only locating a generic header. The _MAT path likewise

passed a generic header to the IOAPIC helper.

Validate that a current record has a complete generic header, that its

declared length is contained in the available record range, and that a

typed IOAPIC record contains the full fixed IOAPIC body before reading

its fields. Use the same relation for both MADT and _MAT provider

paths.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/2a5520065e76000f8c979d3d7b3d861ccaaecf1eRefgit.kernel.org/stable/c/2c50ffdc73f3a70d745d249f509fc290754121e6Refgit.kernel.org/stable/c/355bee5f11acb116cd256588631b4028ca562646Refgit.kernel.org/stable/c/4d8ecaa332c163f2b44aa5027bf061950b71b5f3Refgit.kernel.org/stable/c/5601bd81bc290a724ed47797d22c16cba4d7ed9fRefgit.kernel.org/stable/c/74d84320f8e37955eb286a7777843d554e6e75b2Refgit.kernel.org/stable/c/8e67b58c04990817ac2dbf8ae03353be6a358cd4Refgit.kernel.org/stable/c/ff82e3374e9103d046b2a82f4315d9a422ff097d

How CyberStrike helps

Frequently asked questions

What is CVE-2026-92522?

CVE-2026-92522 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).

How severe is CVE-2026-92522?

This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-92522?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-92522?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-92522 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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