CVE-2022-50769 (GCVE-0-2022-50769)
Vulnerability from cvelistv5
Published
2025-12-24 13:05
Modified
2025-12-24 13:05
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: mmc: mxcmmc: 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().
References
Impacted products
Vendor Product Version
Linux Linux Version: d96be879ff469759af6d7fcebdb66237c18da6f8
Version: d96be879ff469759af6d7fcebdb66237c18da6f8
Version: d96be879ff469759af6d7fcebdb66237c18da6f8
Version: d96be879ff469759af6d7fcebdb66237c18da6f8
Version: d96be879ff469759af6d7fcebdb66237c18da6f8
Version: d96be879ff469759af6d7fcebdb66237c18da6f8
Version: d96be879ff469759af6d7fcebdb66237c18da6f8
Version: d96be879ff469759af6d7fcebdb66237c18da6f8
Version: d96be879ff469759af6d7fcebdb66237c18da6f8
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/mmc/host/mxcmmc.c"
          ],
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          "vendor": "Linux",
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "2.6.29"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "4.9.337",
              "versionType": "semver"
            },
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              "version": "4.14.303",
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            },
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              "status": "unaffected",
              "version": "4.19.270",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "5.10.163",
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              "version": "5.15.86",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.16",
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              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: mxcmmc: 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()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-24T13:05:58.994Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5f35c038c9f4d258b3cf77885a2730f1417d63e7"
        },
        {
          "url": "https://git.kernel.org/stable/c/1cf0c1e58738b97e2de207846105b6a5d46622ee"
        },
        {
          "url": "https://git.kernel.org/stable/c/b8bdb3fd13d5cd1e86d22fd3f803a742fd88af89"
        },
        {
          "url": "https://git.kernel.org/stable/c/32eb502c972dfc34413c9147418b3d94d870c2b8"
        },
        {
          "url": "https://git.kernel.org/stable/c/3904eb97bb78fdca3e16d30a38ce5697b9686110"
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          "url": "https://git.kernel.org/stable/c/2d496050ded83b13b16f05e1fc0329b0210d2493"
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          "url": "https://git.kernel.org/stable/c/d2ead18bc7cc166220cab5a744a05c5b69431a12"
        },
        {
          "url": "https://git.kernel.org/stable/c/cde600af7b413c9fe03e85c58c4279df90e91d13"
        }
      ],
      "title": "mmc: mxcmmc: fix return value check of mmc_add_host()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50769",
    "datePublished": "2025-12-24T13:05:58.994Z",
    "dateReserved": "2025-12-24T13:02:21.546Z",
    "dateUpdated": "2025-12-24T13:05:58.994Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50769\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-24T13:16:03.707\",\"lastModified\":\"2025-12-24T13:16:03.707\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmmc: mxcmmc: 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().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1cf0c1e58738b97e2de207846105b6a5d46622ee\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2d496050ded83b13b16f05e1fc0329b0210d2493\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/32eb502c972dfc34413c9147418b3d94d870c2b8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3904eb97bb78fdca3e16d30a38ce5697b9686110\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5f35c038c9f4d258b3cf77885a2730f1417d63e7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b8bdb3fd13d5cd1e86d22fd3f803a742fd88af89\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cde600af7b413c9fe03e85c58c4279df90e91d13\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d2ead18bc7cc166220cab5a744a05c5b69431a12\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d37474ab9a79149075f0823315c6d45dd983a78c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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