CVE-2026-92522ACPI: processor: validate MADT IOAPIC entry bounds
- 7.3HighCVSS base score
- 0.14%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 1 day later
· 1 day later
Published
- 32 days later
· 32 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H |
| NVDNVD · Received | 3.1 | High7.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H |
- EPSS (exploitation in 30 days)
- 0.14% · top 97% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.3.
Affected products
- affected ecf5636dcd59cd5508641f995cc4c2bafedbb995 – < 5601bd81bc290a724ed47797d22c16cba4d7ed9f
- affected ecf5636dcd59cd5508641f995cc4c2bafedbb995 – < ff82e3374e9103d046b2a82f4315d9a422ff097d
- affected ecf5636dcd59cd5508641f995cc4c2bafedbb995 – < 2a5520065e76000f8c979d3d7b3d861ccaaecf1e
- affected ecf5636dcd59cd5508641f995cc4c2bafedbb995 – < 8e67b58c04990817ac2dbf8ae03353be6a358cd4
- affected ecf5636dcd59cd5508641f995cc4c2bafedbb995 – < 74d84320f8e37955eb286a7777843d554e6e75b2
- affected ecf5636dcd59cd5508641f995cc4c2bafedbb995 – < 4d8ecaa332c163f2b44aa5027bf061950b71b5f3
- affected ecf5636dcd59cd5508641f995cc4c2bafedbb995 – < 355bee5f11acb116cd256588631b4028ca562646
- affected ecf5636dcd59cd5508641f995cc4c2bafedbb995 – < 2c50ffdc73f3a70d745d249f509fc290754121e6
- affected 4.0
- unaffected < 4.0
- unaffected 5.10.270 – ≤ 5.10.*
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.52 – ≤ 6.18.*
- unaffected 7.2.6 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/5601bd81bc290a724ed47797d22c16cba4d7ed9f (opens in a new tab)
- https://git.kernel.org/stable/c/ff82e3374e9103d046b2a82f4315d9a422ff097d (opens in a new tab)
- https://git.kernel.org/stable/c/2a5520065e76000f8c979d3d7b3d861ccaaecf1e (opens in a new tab)
- https://git.kernel.org/stable/c/8e67b58c04990817ac2dbf8ae03353be6a358cd4 (opens in a new tab)
- https://git.kernel.org/stable/c/74d84320f8e37955eb286a7777843d554e6e75b2 (opens in a new tab)
- https://git.kernel.org/stable/c/4d8ecaa332c163f2b44aa5027bf061950b71b5f3 (opens in a new tab)
- https://git.kernel.org/stable/c/355bee5f11acb116cd256588631b4028ca562646 (opens in a new tab)
- https://git.kernel.org/stable/c/2c50ffdc73f3a70d745d249f509fc290754121e6 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-82143 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-92522)Record last updated .