s390/cmf: Fix virtual vs physical address confusion

{
  "id": "3334a3d3caa1e6abd1843ed50d5fe19512971f3b757815bf6531fb199a9568a3",
  "url": "https://osv.dev/vulnerability/CVE-2026-98475",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "s390/cmf: Fix virtual vs physical address confusion",
    "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.",
    "evidence": "osv:CVE-2026-98475",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.112",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.55",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-98475",
      "aliases": [
        "CVE-2026-98475"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "14edd0d73bfef320fd5be11495687ba537aa6341"
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                {
                  "fixed": "b11f369be31ea11c746833e4d3ad51dcd6b5fa2b"
                },
                {
                  "fixed": "748ec2f7f5df9b4fc742546a8bfc8aa5d847353e"
                },
                {
                  "fixed": "7f78226eb743b362f52b212d7763801642539d1c"
                },
                {
                  "fixed": "f4d04425e66af2ecee9d1a49ae0484436f3c2fd1"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98475.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.9.0"
                },
                {
                  "fixed": "6.12.112"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.55"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.9"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98475.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.305205161Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/748ec2f7f5df9b4fc742546a8bfc8aa5d847353e",
        "https://git.kernel.org/stable/c/7f78226eb743b362f52b212d7763801642539d1c",
        "https://git.kernel.org/stable/c/b11f369be31ea11c746833e4d3ad51dcd6b5fa2b",
        "https://git.kernel.org/stable/c/f4d04425e66af2ecee9d1a49ae0484436f3c2fd1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98475.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-98475",
        "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/2026/98xxx/CVE-2026-98475.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-98475",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 516666,
  "published_at": "2026-10-18T15:15:44.206+00:00"
}