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FKIE_CVE-2022-50858

Vulnerability from fkie_nvd - Published: 2025-12-30 13:16 - Updated: 2026-06-17 05:24
Severity
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/289c964fe182ce755044a6cd57698072e12ffa6f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/29c5b4da41f35108136d843c7432885c78cf8272
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/48dc06333d75f41c2ce9ba954bc3231324b45914
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4a6e5d0222804a3eaf2ea4cf893f412e7cf98cb2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/60fafcf2fb7ee9a4125dc9a86eeb9d490acf23e2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e93d1468f429475a753d6baa79b853b7ee5ef8c0
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/mmc/host/alcor.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "289c964fe182ce755044a6cd57698072e12ffa6f",
              "status": "affected",
              "version": "c5413ad815a675b5c98a002353d8e96b44b164e9",
              "versionType": "git"
            },
            {
              "lessThan": "4a6e5d0222804a3eaf2ea4cf893f412e7cf98cb2",
              "status": "affected",
              "version": "c5413ad815a675b5c98a002353d8e96b44b164e9",
              "versionType": "git"
            },
            {
              "lessThan": "29c5b4da41f35108136d843c7432885c78cf8272",
              "status": "affected",
              "version": "c5413ad815a675b5c98a002353d8e96b44b164e9",
              "versionType": "git"
            },
            {
              "lessThan": "48dc06333d75f41c2ce9ba954bc3231324b45914",
              "status": "affected",
              "version": "c5413ad815a675b5c98a002353d8e96b44b164e9",
              "versionType": "git"
            },
            {
              "lessThan": "60fafcf2fb7ee9a4125dc9a86eeb9d490acf23e2",
              "status": "affected",
              "version": "c5413ad815a675b5c98a002353d8e96b44b164e9",
              "versionType": "git"
            },
            {
              "lessThan": "e93d1468f429475a753d6baa79b853b7ee5ef8c0",
              "status": "affected",
              "version": "c5413ad815a675b5c98a002353d8e96b44b164e9",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/mmc/host/alcor.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.0"
            },
            {
              "lessThan": "5.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: alcor: 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 calling mmc_free_host() in the\nerror path."
    }
  ],
  "id": "CVE-2022-50858",
  "lastModified": "2026-06-17T05:24:18.487",
  "metrics": {},
  "published": "2025-12-30T13:16:00.563",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/289c964fe182ce755044a6cd57698072e12ffa6f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/29c5b4da41f35108136d843c7432885c78cf8272"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/48dc06333d75f41c2ce9ba954bc3231324b45914"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4a6e5d0222804a3eaf2ea4cf893f412e7cf98cb2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/60fafcf2fb7ee9a4125dc9a86eeb9d490acf23e2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e93d1468f429475a753d6baa79b853b7ee5ef8c0"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}



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