accel/ethosu: check MMIO mapping errors in probe

{
  "id": "26408182c2eaf64d3b50b253488376aeb4ee8560b9b4610c916afee74b4bd842",
  "url": "https://osv.dev/vulnerability/CVE-2026-89977",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "accel/ethosu: check MMIO mapping errors in probe",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: accel/ethosu: check MMIO mapping errors in probe devm_platform_ioremap_resource() returns an error pointer when the register resource cannot be mapped. ethosu_probe() stores it and continues until initialization dereferences it through MMIO accessors. Return the mapping error before initializing the device.",
    "evidence": "osv:CVE-2026-89977",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.2.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-89977",
      "aliases": [
        "CVE-2026-89977"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b"
                },
                {
                  "fixed": "f7aad73b481194e3f0efba9688e9a5914bbd036b"
                },
                {
                  "fixed": "7ab64476a610fe65858fdc37c7a30caa13e334ac"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89977.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.5"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89977.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.673564746Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/7ab64476a610fe65858fdc37c7a30caa13e334ac",
        "https://git.kernel.org/stable/c/f7aad73b481194e3f0efba9688e9a5914bbd036b",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89977.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-89977",
        "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/2026/89xxx/CVE-2026-89977.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-89977",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 492505,
  "published_at": "2026-09-16T10:32:55.212+00:00"
}