CVE-2026-92522

HighCVSS 7.3/10Last modified Oct 19, 2026

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.

Metrics

CVSS 3.1 7.3/10CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
LinuxLinux>= ecf5636dcd59cd5508641f995cc4c2bafedbb995, < 5601bd81bc290a724ed47797d22c16cba4d7ed9f; >= ecf5636dcd59cd5508641f995cc4c2bafedbb995, < ff82e3374e9103d046b2a82f4315d9a422ff097d; >= ecf5636dcd59cd5508641f995cc4c2bafedbb995, < 2a5520065e76000f8c979d3d7b3d861ccaaecf1e; >= ecf5636dcd59cd5508641f995cc4c2bafedbb995, < 8e67b58c04990817ac2dbf8ae03353be6a358cd4; >= ecf5636dcd59cd5508641f995cc4c2bafedbb995, < 74d84320f8e37955eb286a7777843d554e6e75b2; >= ecf5636dcd59cd5508641f995cc4c2bafedbb995, < 4d8ecaa332c163f2b44aa5027bf061950b71b5f3; >= ecf5636dcd59cd5508641f995cc4c2bafedbb995, < 355bee5f11acb116cd256588631b4028ca562646; >= ecf5636dcd59cd5508641f995cc4c2bafedbb995, < 2c50ffdc73f3a70d745d249f509fc290754121e6
LinuxLinux4.0

References

Timeline

Published
Sep 17, 2026
Last modified
Oct 19, 2026
NVD status
Received

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