mmc: alcor: fix return value check of mmc_add_host()

{
  "id": "97f8e9468a9e2aaea8d92ca3ad550968d0be25ebc925580345c2930004027e63",
  "url": "https://osv.dev/vulnerability/CVE-2022-50858",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "mmc: alcor: fix return value check of mmc_add_host()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: mmc: alcor: fix return value check of mmc_add_host() mmc_add_host() may return error, if we ignore its return value, the memory that allocated in mmc_alloc_host() will be leaked and it will lead a kernel crash because of deleting not added device in the remove path. So fix this by checking the return value and calling mmc_free_host() in the error path.",
    "evidence": "osv:CVE-2022-50858",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.4.229",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.163",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.86",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.0.16",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-50858",
      "aliases": [
        "CVE-2022-50858"
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      "affected": [
        {
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                  "fixed": "4a6e5d0222804a3eaf2ea4cf893f412e7cf98cb2"
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                {
                  "fixed": "29c5b4da41f35108136d843c7432885c78cf8272"
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                  "fixed": "48dc06333d75f41c2ce9ba954bc3231324b45914"
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                {
                  "fixed": "60fafcf2fb7ee9a4125dc9a86eeb9d490acf23e2"
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                {
                  "fixed": "e93d1468f429475a753d6baa79b853b7ee5ef8c0"
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          ],
          "database_specific": {
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        },
        {
          "ranges": [
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              "type": "ECOSYSTEM",
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50858.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.176858125Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/289c964fe182ce755044a6cd57698072e12ffa6f",
        "https://git.kernel.org/stable/c/29c5b4da41f35108136d843c7432885c78cf8272",
        "https://git.kernel.org/stable/c/48dc06333d75f41c2ce9ba954bc3231324b45914",
        "https://git.kernel.org/stable/c/4a6e5d0222804a3eaf2ea4cf893f412e7cf98cb2",
        "https://git.kernel.org/stable/c/60fafcf2fb7ee9a4125dc9a86eeb9d490acf23e2",
        "https://git.kernel.org/stable/c/e93d1468f429475a753d6baa79b853b7ee5ef8c0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50858.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50858",
        "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/2022/50xxx/CVE-2022-50858.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-50858",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 493952,
  "published_at": "2025-12-30T12:15:32.534+00:00"
}