GHSA-F972-7CQM-CM9W

Vulnerability from github – Published: 2025-12-30 15:30 – Updated: 2025-12-30 15:30
VLAI?
Details

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

mmc: via-sdmmc: fix return value check of mmc_add_host()

mmc_add_host() may return error, if we ignore its return value, it will lead two issues: 1. The memory that allocated in mmc_alloc_host() is leaked. 2. In the remove() path, mmc_remove_host() will be called to delete device, but it's not added yet, it will lead a kernel crash because of null-ptr-deref in device_del().

Fix this by checking the return value and goto error path which will call mmc_free_host().

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50846"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-30T13:15:59Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: via-sdmmc: fix return value check of mmc_add_host()\n\nmmc_add_host() may return error, if we ignore its return value,\nit will lead two issues:\n1. The memory that allocated in mmc_alloc_host() is leaked.\n2. In the remove() path, mmc_remove_host() will be called to\n   delete device, but it\u0027s not added yet, it will lead a kernel\n   crash because of null-ptr-deref in device_del().\n\nFix this by checking the return value and goto error path which\nwill call mmc_free_host().",
  "id": "GHSA-f972-7cqm-cm9w",
  "modified": "2025-12-30T15:30:28Z",
  "published": "2025-12-30T15:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50846"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/076bcd2c93e16b05c10564e299d6e5d26a766d00"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0959cc1685eb19774300d43ef25e318b457b156b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ec94795114edc7e24ec71849dce42bfa61dafa3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/12b8e81b77c05c658efd9cde3585bbd65ae39b59"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/63400da6cd37a9793c19bb6aed7131b58b975a04"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/95025a8dd0ec015872f6c16473fe04d6264e68ca"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ba91b413983a9235792523c6b9f7ba2586c4d75d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e4e46fb61e3bb4628170810d3f2b996b709b90d9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f59ef2a47a228e51322ad76752a55a8917c56e38"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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