{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "81244074b518aeb90de5f68e7e825564c29c5c50"
            },
            {
              "fixed": "d0502ed0a1aae97e2ab7a21545903ba612d9f02e"
            },
            {
              "fixed": "41b5e0ce6801bf04d8fd3bca46e8c393349ebd5c"
            },
            {
              "fixed": "20db6573301e66cd65ebf6c130b6563c69374d9d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.16.0"
            },
            {
              "fixed": "6.18.53"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97593.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/s390: Fix NULL dereference in iova_to_phys() with ZPCI_TABLE_TYPE_RFX\n\nWhen using a 5-level translation table via ZPCI_TABLE_TYPE_RFX\nget_rso_from_iova() returns NULL when the region-first entry is invalid.\nYet in get_rto_from_iova() the region-second origin rso is not checked\nto be non-NULL before accessing rso[rsx] leading to a NULL pointer\ndereference instead of a NULL return when iova_to_phys() is called on\na unmapped IOVA. Fix this by adding the missing NULL check.",
  "id": "CVE-2026-97593",
  "modified": "2026-09-27T03:30:14.309788274Z",
  "published": "2026-09-25T10:22:09.913Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/20db6573301e66cd65ebf6c130b6563c69374d9d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/41b5e0ce6801bf04d8fd3bca46e8c393349ebd5c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d0502ed0a1aae97e2ab7a21545903ba612d9f02e"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97593.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97593"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "iommu/s390: Fix NULL dereference in iova_to_phys() with ZPCI_TABLE_TYPE_RFX"
}