CVE-2026-89438 (GCVE-0-2026-89438)
Vulnerability from cvelistv5
Published
2026-09-11 19:43
Modified
2026-10-19 08:46
Severity ?
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 12a7d2cb811dd8a884dea088a2701fcb8d00136e
Version: 12a7d2cb811dd8a884dea088a2701fcb8d00136e
Version: 12a7d2cb811dd8a884dea088a2701fcb8d00136e
Version: 12a7d2cb811dd8a884dea088a2701fcb8d00136e
Version: 12a7d2cb811dd8a884dea088a2701fcb8d00136e
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "0d601126c7afda9bb94dfecc8b2c0a16f20d76cb",
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              "versionType": "git"
            },
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              "lessThan": "c9ee2770eb95ba316a56d776b2b66666b70c194b",
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              "versionType": "git"
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              "versionType": "git"
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              "versionType": "git"
            }
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.109",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.50",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionEndExcluding": "7.3",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: ISST: Validate logical CPU id and clos id\n\nValidate max CLOS ID and logical CPU ID for core power feature.\nReject any clos level or logical CPU number greater than the\nsupported maximum. These are used to calculate MMIO offset."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:46:46.711Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0d601126c7afda9bb94dfecc8b2c0a16f20d76cb"
        },
        {
          "url": "https://git.kernel.org/stable/c/c9ee2770eb95ba316a56d776b2b66666b70c194b"
        },
        {
          "url": "https://git.kernel.org/stable/c/5b032e1dda486ca41d10536bd195bd8a559af1e2"
        },
        {
          "url": "https://git.kernel.org/stable/c/82d4afadb02fb4d7d7bb9230900904c10e49ec87"
        },
        {
          "url": "https://git.kernel.org/stable/c/124e2dbabe460c2a6e7440f4ad8af560131295c9"
        }
      ],
      "title": "platform/x86: ISST: Validate logical CPU id and clos id",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89438",
    "datePublished": "2026-09-11T19:43:08.077Z",
    "dateReserved": "2026-09-11T19:38:34.703Z",
    "dateUpdated": "2026-10-19T08:46:46.711Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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