CVE-2026-92522ACPI: processor: validate MADT IOAPIC entry bounds
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.3 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from ecf5636dcd59cd5508641f995cc4c2bafedbb995 before 5601bd81bc290a724ed47797d22c16cba4d7ed9f; from ecf5636dcd59cd5508641f995cc4c2bafedbb995 before ff82e3374e9103d046b2a82f4315d9a422ff097d; from ecf5636dcd59cd5508641f995cc4c2bafedbb995 before 2a5520065e76000f8c979d3d7b3d861ccaaecf1e; from ecf5636dcd59cd5508641f995cc4c2bafedbb995 before 8e67b58c04990817ac2dbf8ae03353be6a358cd4; from ecf5636dcd59cd5508641f995cc4c2bafedbb995 before 74d84320f8e37955eb286a7777843d554e6e75b2; from ecf5636dcd59cd5508641f995cc4c2bafedbb995 before 4d8ecaa332c163f2b44aa5027bf061950b71b5f3; from ecf5636dcd59cd5508641f995cc4c2bafedbb995 before 355bee5f11acb116cd256588631b4028ca562646; from ecf5636dcd59cd5508641f995cc4c2bafedbb995 before 2c50ffdc73f3a70d745d249f509fc290754121e6 | CNA record |
References
- https://git.kernel.org/stable/c/5601bd81bc290a724ed47797d22c16cba4d7ed9f
- https://git.kernel.org/stable/c/ff82e3374e9103d046b2a82f4315d9a422ff097d
- https://git.kernel.org/stable/c/2a5520065e76000f8c979d3d7b3d861ccaaecf1e
- https://git.kernel.org/stable/c/8e67b58c04990817ac2dbf8ae03353be6a358cd4
- https://git.kernel.org/stable/c/74d84320f8e37955eb286a7777843d554e6e75b2
- https://git.kernel.org/stable/c/4d8ecaa332c163f2b44aa5027bf061950b71b5f3
- https://git.kernel.org/stable/c/355bee5f11acb116cd256588631b4028ca562646
- https://git.kernel.org/stable/c/2c50ffdc73f3a70d745d249f509fc290754121e6
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.