ghsa-2x5r-jfhx-632p
Vulnerability from github
Published
2025-09-15 15:31
Modified
2025-09-15 15:31
Details

In the Linux kernel, the following vulnerability has been resolved:

mmc: vub300: 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 goto error path which will call mmc_free_host(), besides, the timer added before mmc_add_host() needs be del.

And this patch fixes another missing call mmc_free_host() if usb_control_msg() fails.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50251"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-15T14:15:35Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: vub300: fix return value check of mmc_add_host()\n\nmmc_add_host() may return error, if we ignore its return value, the memory\nthat allocated in mmc_alloc_host() will be leaked and it will lead a kernel\ncrash because of deleting not added device in the remove path.\n\nSo fix this by checking the return value and goto error path which will call\nmmc_free_host(), besides, the timer added before mmc_add_host() needs be del.\n\nAnd this patch fixes another missing call mmc_free_host() if usb_control_msg()\nfails.",
  "id": "GHSA-2x5r-jfhx-632p",
  "modified": "2025-09-15T15:31:22Z",
  "published": "2025-09-15T15:31:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50251"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0613ad2401f88bdeae5594c30afe318e93b14676"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2044b2ea77945f372ef161d1bbf814e471767ff2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25f05d762ca5e1c685002a53dd44f68e78ca3feb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3049a3b927a40d89d4582ff1033cd7953be773c7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3b29f8769d32016b2d89183db4d80c7a71b7e35e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/41ed46bdbd2878cd6567abe0974a445f8b1b8ec8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a46e681151bbdacdf6b89ee8c4e5bad0555142bb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/afc898019e7bf18c5eb7a0ac19852fcb1b341b3c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9e85979b59cb86f0a15defa8199d740e2b36b90"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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