md/raid10: fix null ptr dereference in raid10_size()

{
  "id": "b37486a070db32743462327fa882407ab92572ce7a4f2b1ca161b87e4ccdafb1",
  "url": "https://osv.dev/vulnerability/CVE-2024-50109",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "md/raid10: fix null ptr dereference in raid10_size()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix null ptr dereference in raid10_size() In raid10_run() if raid10_set_queue_limits() succeed, the return value is set to zero, and if following procedures failed raid10_run() will return zero while mddev->private is still NULL, causing null ptr dereference in raid10_size(). Fix the problem by only overwrite the return value if raid10_set_queue_limits() failed.",
    "evidence": "osv:CVE-2024-50109",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.11.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2024-50109",
      "aliases": [
        "CVE-2024-50109"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
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                  "fixed": "b3054db2fd2d35f2eb3b4b5fb1407792f465391c"
                },
                {
                  "fixed": "825711e00117fc686ab89ac36a9a7b252dc349c6"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-50109.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.9.0"
                },
                {
                  "fixed": "6.11.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-50109.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:44.145228578Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/825711e00117fc686ab89ac36a9a7b252dc349c6",
        "https://git.kernel.org/stable/c/b3054db2fd2d35f2eb3b4b5fb1407792f465391c",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50109.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-50109",
        "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/2024/50xxx/CVE-2024-50109.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-50109",
        "evidence": "/id"
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    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 511665,
  "published_at": "2024-11-05T17:10:42.689+00:00"
}