CVE-2026-98475 (GCVE-0-2026-98475)
Vulnerability from cvelistv5
Published
2026-10-18 15:15
Modified
2026-10-19 09:20
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: s390/cmf: Fix virtual vs physical address confusion The measurement block address is an absolute address. Define the associated schib_config and schib fields as dma64_t to enable automatic detection of incorrect assignments. Also add the missing virt_to_dma64() translation. Without this fix, a wrong address will be used by firmware when storing extended format channel measurement data on kernels built with CONFIG_RANDOMIZE_IDENTITY_BASE=y.
References
Impacted products
Vendor Product Version
Linux Linux Version: 14edd0d73bfef320fd5be11495687ba537aa6341
Version: 14edd0d73bfef320fd5be11495687ba537aa6341
Version: 14edd0d73bfef320fd5be11495687ba537aa6341
Version: 14edd0d73bfef320fd5be11495687ba537aa6341
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/s390/cio/cio.h",
            "drivers/s390/cio/cmf.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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          "programFiles": [
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            "drivers/s390/cio/cmf.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "6.9"
            },
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              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
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              "status": "unaffected",
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      "cpeApplicability": [
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              "cpeMatch": [
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                  "vulnerable": true
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                {
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/cmf: Fix virtual vs physical address confusion\n\nThe measurement block address is an absolute address. Define the\nassociated schib_config and schib fields as dma64_t to enable automatic\ndetection of incorrect assignments. Also add the missing virt_to_dma64()\ntranslation.\n\nWithout this fix, a wrong address will be used by firmware when storing\nextended format channel measurement data on kernels built with\nCONFIG_RANDOMIZE_IDENTITY_BASE=y."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:20:12.941Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/b11f369be31ea11c746833e4d3ad51dcd6b5fa2b"
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        },
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          "url": "https://git.kernel.org/stable/c/7f78226eb743b362f52b212d7763801642539d1c"
        },
        {
          "url": "https://git.kernel.org/stable/c/f4d04425e66af2ecee9d1a49ae0484436f3c2fd1"
        }
      ],
      "title": "s390/cmf: Fix virtual vs physical address confusion",
      "x_generator": {
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98475",
    "datePublished": "2026-10-18T15:15:44.206Z",
    "dateReserved": "2026-09-25T10:25:14.351Z",
    "dateUpdated": "2026-10-19T09:20:12.941Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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