ACPI: processor: validate MADT IOAPIC entry bounds
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.270, 5.15.221, 6.1.188, 6.12.110, 6.18.52, 6.6.157, 7.2.6
- CVEs
- CVE-2026-92522
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 8 Nov 2026, 03:49 UTC · Revision 1
Source evidence
ACPI: processor: validate MADT IOAPIC entry bounds
core-osv · Original sourcePublished 17 Sept 2026, 16:10 UTC
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.
osv:CVE-2026-92522
Kernel
Fixed versions: 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6
Complete source record
{
"id": "e0778286ceb0e6f7e102455d799d0f69cbb39a7bc73353651a1333e1935dcbfc",
"url": "https://osv.dev/vulnerability/CVE-2026-92522",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ACPI: processor: validate MADT IOAPIC entry bounds",
"summary": "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.",
"evidence": "osv:CVE-2026-92522",
"products": [
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"name": {
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"prerequisites": [],
"fixed_versions": [
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"value": "5.10.270",
"evidence": "/affected/1/ranges"
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{
"value": "5.15.221",
"evidence": "/affected/1/ranges"
},
{
"value": "6.1.188",
"evidence": "/affected/1/ranges"
},
{
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{
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{
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"evidence": "/affected/1/ranges"
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{
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"affected_versions": []
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"severity": "high",
"structured": {
"id": "CVE-2026-92522",
"aliases": [
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"metrics": [
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"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"
}
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"affected": [
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{
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{
"fixed": "6.12.110"
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{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.13.0"
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{
"fixed": "6.18.52"
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{
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{
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"package": {
"name": "Kernel",
"ecosystem": "Linux"
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"database_specific": {
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"modified": "2026-10-28T02:30:53.355357931Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/2a5520065e76000f8c979d3d7b3d861ccaaecf1e",
"https://git.kernel.org/stable/c/2c50ffdc73f3a70d745d249f509fc290754121e6",
"https://git.kernel.org/stable/c/355bee5f11acb116cd256588631b4028ca562646",
"https://git.kernel.org/stable/c/4d8ecaa332c163f2b44aa5027bf061950b71b5f3",
"https://git.kernel.org/stable/c/5601bd81bc290a724ed47797d22c16cba4d7ed9f",
"https://git.kernel.org/stable/c/74d84320f8e37955eb286a7777843d554e6e75b2",
"https://git.kernel.org/stable/c/8e67b58c04990817ac2dbf8ae03353be6a358cd4",
"https://git.kernel.org/stable/c/ff82e3374e9103d046b2a82f4315d9a422ff097d",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92522.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-92522",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92522.json"
}
},
"related_cves": [
{
"value": "CVE-2026-92522",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 522346,
"published_at": "2026-09-17T16:10:28.823+00:00"
}