platform/x86: ISST: Validate logical CPU id and clos id
In the Linux kernel, the following vulnerability has been resolved: platform/x86: ISST: Validate logical CPU id and clos id Validate max CLOS ID and logical CPU ID for core power feature. Reject any clos level or logical CPU number greater than the supported maximum. These are used to calculate MMIO offset.
CVE-2026-89438
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-2026-89438
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": "12a7d2cb811dd8a884dea088a2701fcb8d00136e",
"lessThan": "0d601126c7afda9bb94dfecc8b2c0a16f20d76cb",
"versionType": "git"
},
{
"status": "affected",
"version": "12a7d2cb811dd8a884dea088a2701fcb8d00136e",
"lessThan": "c9ee2770eb95ba316a56d776b2b66666b70c194b",
"versionType": "git"
},
{
"status": "affected",
"version": "12a7d2cb811dd8a884dea088a2701fcb8d00136e",
"lessThan": "5b032e1dda486ca41d10536bd195bd8a559af1e2",
"versionType": "git"
},
{
"status": "affected",
"version": "12a7d2cb811dd8a884dea088a2701fcb8d00136e",
"lessThan": "82d4afadb02fb4d7d7bb9230900904c10e49ec87",
"versionType": "git"
},
{
"status": "affected",
"version": "12a7d2cb811dd8a884dea088a2701fcb8d00136e",
"lessThan": "124e2dbabe460c2a6e7440f4ad8af560131295c9",
"versionType": "git"
}
],
"programFiles": [
"drivers/platform/x86/intel/speed_select_if/isst_tpmi_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": "6.4"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.109",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.50",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.4",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89438
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #34974 · Revision 1
- Added to Heist Feed
- Publisher date