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.
CVE-2026-92522
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-92522
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "ecf5636dcd59cd5508641f995cc4c2bafedbb995",
"lessThan": "5601bd81bc290a724ed47797d22c16cba4d7ed9f",
"versionType": "git"
},
{
"status": "affected",
"version": "ecf5636dcd59cd5508641f995cc4c2bafedbb995",
"lessThan": "ff82e3374e9103d046b2a82f4315d9a422ff097d",
"versionType": "git"
},
{
"status": "affected",
"version": "ecf5636dcd59cd5508641f995cc4c2bafedbb995",
"lessThan": "2a5520065e76000f8c979d3d7b3d861ccaaecf1e",
"versionType": "git"
},
{
"status": "affected",
"version": "ecf5636dcd59cd5508641f995cc4c2bafedbb995",
"lessThan": "8e67b58c04990817ac2dbf8ae03353be6a358cd4",
"versionType": "git"
},
{
"status": "affected",
"version": "ecf5636dcd59cd5508641f995cc4c2bafedbb995",
"lessThan": "74d84320f8e37955eb286a7777843d554e6e75b2",
"versionType": "git"
},
{
"status": "affected",
"version": "ecf5636dcd59cd5508641f995cc4c2bafedbb995",
"lessThan": "4d8ecaa332c163f2b44aa5027bf061950b71b5f3",
"versionType": "git"
},
{
"status": "affected",
"version": "ecf5636dcd59cd5508641f995cc4c2bafedbb995",
"lessThan": "355bee5f11acb116cd256588631b4028ca562646",
"versionType": "git"
},
{
"status": "affected",
"version": "ecf5636dcd59cd5508641f995cc4c2bafedbb995",
"lessThan": "2c50ffdc73f3a70d745d249f509fc290754121e6",
"versionType": "git"
}
],
"programFiles": [
"drivers/acpi/processor_core.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/acpi/processor_core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-92522
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #37769 · Revision 1
- Added to Heist Feed
- Publisher date