GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2021-47361 (GCVE-0-2021-47361)

Vulnerability from cvelistv5 – Published: 2024-05-21 15:03 – Updated: 2026-05-11 13:53
VLAI
Title
mcb: fix error handling in mcb_alloc_bus()
Summary
In the Linux kernel, the following vulnerability has been resolved: mcb: fix error handling in mcb_alloc_bus() There are two bugs: 1) If ida_simple_get() fails then this code calls put_device(carrier) but we haven't yet called get_device(carrier) and probably that leads to a use after free. 2) After device_initialize() then we need to use put_device() to release the bus. This will free the internal resources tied to the device and call mcb_free_bus() which will free the rest.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-21 18:23 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 18d28819809909c3f24bb72183a901c5e332a63d , < 8a558261fa57a6deefb0925ab1829f698b194aea (git)
Affected: 18d28819809909c3f24bb72183a901c5e332a63d , < 115b07d9f47e3996430b8f2007edd9768e1f807f (git)
Affected: 18d28819809909c3f24bb72183a901c5e332a63d , < 66f74ba9be9daf9c47fface6af3677f602774f6b (git)
Affected: 18d28819809909c3f24bb72183a901c5e332a63d , < 7751f609eadf36b1f53712bae430019c53a16eb0 (git)
Affected: 18d28819809909c3f24bb72183a901c5e332a63d , < 91e4ad05bf18322b5921d1a6c9b603f6eb1694f0 (git)
Affected: 18d28819809909c3f24bb72183a901c5e332a63d , < 9fc198f415dee070a1de957bb5bf5921d8df3499 (git)
Affected: 18d28819809909c3f24bb72183a901c5e332a63d , < 25a1433216489de4abc889910f744e952cb6dbae (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.7
Unaffected: 0 , < 4.7 (semver)
Unaffected: 4.9.285 , ≤ 4.9.* (semver)
Unaffected: 4.14.249 , ≤ 4.14.* (semver)
Unaffected: 4.19.209 , ≤ 4.19.* (semver)
Unaffected: 5.4.150 , ≤ 5.4.* (semver)
Unaffected: 5.10.70 , ≤ 5.10.* (semver)
Unaffected: 5.14.9 , ≤ 5.14.* (semver)
Unaffected: 5.15 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47361",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-21T18:23:29.755480Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:13:52.235Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:32:08.591Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/8a558261fa57a6deefb0925ab1829f698b194aea"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/115b07d9f47e3996430b8f2007edd9768e1f807f"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/66f74ba9be9daf9c47fface6af3677f602774f6b"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/7751f609eadf36b1f53712bae430019c53a16eb0"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/91e4ad05bf18322b5921d1a6c9b603f6eb1694f0"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/9fc198f415dee070a1de957bb5bf5921d8df3499"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/25a1433216489de4abc889910f744e952cb6dbae"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/mcb/mcb-core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8a558261fa57a6deefb0925ab1829f698b194aea",
              "status": "affected",
              "version": "18d28819809909c3f24bb72183a901c5e332a63d",
              "versionType": "git"
            },
            {
              "lessThan": "115b07d9f47e3996430b8f2007edd9768e1f807f",
              "status": "affected",
              "version": "18d28819809909c3f24bb72183a901c5e332a63d",
              "versionType": "git"
            },
            {
              "lessThan": "66f74ba9be9daf9c47fface6af3677f602774f6b",
              "status": "affected",
              "version": "18d28819809909c3f24bb72183a901c5e332a63d",
              "versionType": "git"
            },
            {
              "lessThan": "7751f609eadf36b1f53712bae430019c53a16eb0",
              "status": "affected",
              "version": "18d28819809909c3f24bb72183a901c5e332a63d",
              "versionType": "git"
            },
            {
              "lessThan": "91e4ad05bf18322b5921d1a6c9b603f6eb1694f0",
              "status": "affected",
              "version": "18d28819809909c3f24bb72183a901c5e332a63d",
              "versionType": "git"
            },
            {
              "lessThan": "9fc198f415dee070a1de957bb5bf5921d8df3499",
              "status": "affected",
              "version": "18d28819809909c3f24bb72183a901c5e332a63d",
              "versionType": "git"
            },
            {
              "lessThan": "25a1433216489de4abc889910f744e952cb6dbae",
              "status": "affected",
              "version": "18d28819809909c3f24bb72183a901c5e332a63d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/mcb/mcb-core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.7"
            },
            {
              "lessThan": "4.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.285",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.249",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.150",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.70",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.14.*",
              "status": "unaffected",
              "version": "5.14.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.285",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.249",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.209",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.150",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.70",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.14.9",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmcb: fix error handling in mcb_alloc_bus()\n\nThere are two bugs:\n1) If ida_simple_get() fails then this code calls put_device(carrier)\n   but we haven\u0027t yet called get_device(carrier) and probably that\n   leads to a use after free.\n2) After device_initialize() then we need to use put_device() to\n   release the bus.  This will free the internal resources tied to the\n   device and call mcb_free_bus() which will free the rest."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T13:53:13.268Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8a558261fa57a6deefb0925ab1829f698b194aea"
        },
        {
          "url": "https://git.kernel.org/stable/c/115b07d9f47e3996430b8f2007edd9768e1f807f"
        },
        {
          "url": "https://git.kernel.org/stable/c/66f74ba9be9daf9c47fface6af3677f602774f6b"
        },
        {
          "url": "https://git.kernel.org/stable/c/7751f609eadf36b1f53712bae430019c53a16eb0"
        },
        {
          "url": "https://git.kernel.org/stable/c/91e4ad05bf18322b5921d1a6c9b603f6eb1694f0"
        },
        {
          "url": "https://git.kernel.org/stable/c/9fc198f415dee070a1de957bb5bf5921d8df3499"
        },
        {
          "url": "https://git.kernel.org/stable/c/25a1433216489de4abc889910f744e952cb6dbae"
        }
      ],
      "title": "mcb: fix error handling in mcb_alloc_bus()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47361",
    "datePublished": "2024-05-21T15:03:29.882Z",
    "dateReserved": "2024-05-21T14:58:30.809Z",
    "dateUpdated": "2026-05-11T13:53:13.268Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-47361",
      "date": "2026-09-15",
      "epss": "0.00242",
      "percentile": "0.15535"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.7\", \"versionEndExcluding\": \"4.9.285\", \"matchCriteriaId\": \"71D61395-0228-4BB6-9B08-38F445F83B82\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.10\", \"versionEndExcluding\": \"4.14.249\", \"matchCriteriaId\": \"9DFC8239-9F26-43B2-A340-8EFC6BC6BDA8\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.15\", \"versionEndExcluding\": \"4.19.209\", \"matchCriteriaId\": \"21C23429-F802-4256-B3C2-9EEA76AC11FF\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.20\", \"versionEndExcluding\": \"5.4.150\", \"matchCriteriaId\": \"87771E47-210D-48FA-95BC-48A86225B30F\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.5\", \"versionEndExcluding\": \"5.10.70\", \"matchCriteriaId\": \"A2A50090-4483-4F44-9147-BF0B012FBF7E\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11\", \"versionEndExcluding\": \"5.14.9\", \"matchCriteriaId\": \"1B31D6C1-A751-438D-906B-0C56B789D498\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"E46C74C6-B76B-4C94-A6A4-FD2FFF62D644\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*\", \"matchCriteriaId\": \"60134C3A-06E4-48C1-B04F-2903732A4E56\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmcb: fix error handling in mcb_alloc_bus()\\n\\nThere are two bugs:\\n1) If ida_simple_get() fails then this code calls put_device(carrier)\\n   but we haven\u0027t yet called get_device(carrier) and probably that\\n   leads to a use after free.\\n2) After device_initialize() then we need to use put_device() to\\n   release the bus.  This will free the internal resources tied to the\\n   device and call mcb_free_bus() which will free the rest.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mcb: corrige el manejo de errores en mcb_alloc_bus() Hay dos errores: 1) Si ida_simple_get() falla, entonces este c\\u00f3digo llama a put_device(carrier) pero a\\u00fan no hemos llamado a get_device( transportista) y probablemente eso conduzca a un uso posterior gratuito. 2) Despu\\u00e9s de device_initialize() entonces necesitamos usar put_device() para liberar el bus. Esto liberar\\u00e1 los recursos internos vinculados al dispositivo y llamar\\u00e1 a mcb_free_bus() que liberar\\u00e1 el resto.\"}]",
      "id": "CVE-2021-47361",
      "lastModified": "2024-12-26T19:45:51.123",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}]}",
      "published": "2024-05-21T15:15:22.283",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/115b07d9f47e3996430b8f2007edd9768e1f807f\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/25a1433216489de4abc889910f744e952cb6dbae\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/66f74ba9be9daf9c47fface6af3677f602774f6b\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/7751f609eadf36b1f53712bae430019c53a16eb0\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/8a558261fa57a6deefb0925ab1829f698b194aea\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/91e4ad05bf18322b5921d1a6c9b603f6eb1694f0\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/9fc198f415dee070a1de957bb5bf5921d8df3499\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/115b07d9f47e3996430b8f2007edd9768e1f807f\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/25a1433216489de4abc889910f744e952cb6dbae\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/66f74ba9be9daf9c47fface6af3677f602774f6b\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/7751f609eadf36b1f53712bae430019c53a16eb0\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/8a558261fa57a6deefb0925ab1829f698b194aea\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/91e4ad05bf18322b5921d1a6c9b603f6eb1694f0\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/9fc198f415dee070a1de957bb5bf5921d8df3499\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47361\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-21T15:15:22.283\",\"lastModified\":\"2026-06-17T04:17:17.597\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmcb: fix error handling in mcb_alloc_bus()\\n\\nThere are two bugs:\\n1) If ida_simple_get() fails then this code calls put_device(carrier)\\n   but we haven\u0027t yet called get_device(carrier) and probably that\\n   leads to a use after free.\\n2) After device_initialize() then we need to use put_device() to\\n   release the bus.  This will free the internal resources tied to the\\n   device and call mcb_free_bus() which will free the rest.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mcb: corrige el manejo de errores en mcb_alloc_bus() Hay dos errores: 1) Si ida_simple_get() falla, entonces este c\u00f3digo llama a put_device(carrier) pero a\u00fan no hemos llamado a get_device( transportista) y probablemente eso conduzca a un uso posterior gratuito. 2) Despu\u00e9s de device_initialize() entonces necesitamos usar put_device() para liberar el bus. Esto liberar\u00e1 los recursos internos vinculados al dispositivo y llamar\u00e1 a mcb_free_bus() que liberar\u00e1 el resto.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/mcb/mcb-core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"18d28819809909c3f24bb72183a901c5e332a63d\",\"lessThan\":\"8a558261fa57a6deefb0925ab1829f698b194aea\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"18d28819809909c3f24bb72183a901c5e332a63d\",\"lessThan\":\"115b07d9f47e3996430b8f2007edd9768e1f807f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"18d28819809909c3f24bb72183a901c5e332a63d\",\"lessThan\":\"66f74ba9be9daf9c47fface6af3677f602774f6b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"18d28819809909c3f24bb72183a901c5e332a63d\",\"lessThan\":\"7751f609eadf36b1f53712bae430019c53a16eb0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"18d28819809909c3f24bb72183a901c5e332a63d\",\"lessThan\":\"91e4ad05bf18322b5921d1a6c9b603f6eb1694f0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"18d28819809909c3f24bb72183a901c5e332a63d\",\"lessThan\":\"9fc198f415dee070a1de957bb5bf5921d8df3499\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"18d28819809909c3f24bb72183a901c5e332a63d\",\"lessThan\":\"25a1433216489de4abc889910f744e952cb6dbae\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/mcb/mcb-core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.7\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.7\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.9.285\",\"lessThanOrEqual\":\"4.9.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.14.249\",\"lessThanOrEqual\":\"4.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.209\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.150\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.70\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.14.9\",\"lessThanOrEqual\":\"5.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-05-21T18:23:29.755480Z\",\"id\":\"CVE-2021-47361\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.7\",\"versionEndExcluding\":\"4.9.285\",\"matchCriteriaId\":\"71D61395-0228-4BB6-9B08-38F445F83B82\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"4.14.249\",\"matchCriteriaId\":\"9DFC8239-9F26-43B2-A340-8EFC6BC6BDA8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.209\",\"matchCriteriaId\":\"21C23429-F802-4256-B3C2-9EEA76AC11FF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.150\",\"matchCriteriaId\":\"87771E47-210D-48FA-95BC-48A86225B30F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.70\",\"matchCriteriaId\":\"A2A50090-4483-4F44-9147-BF0B012FBF7E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.14.9\",\"matchCriteriaId\":\"1B31D6C1-A751-438D-906B-0C56B789D498\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"E46C74C6-B76B-4C94-A6A4-FD2FFF62D644\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"60134C3A-06E4-48C1-B04F-2903732A4E56\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/115b07d9f47e3996430b8f2007edd9768e1f807f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/25a1433216489de4abc889910f744e952cb6dbae\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/66f74ba9be9daf9c47fface6af3677f602774f6b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7751f609eadf36b1f53712bae430019c53a16eb0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8a558261fa57a6deefb0925ab1829f698b194aea\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/91e4ad05bf18322b5921d1a6c9b603f6eb1694f0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9fc198f415dee070a1de957bb5bf5921d8df3499\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/115b07d9f47e3996430b8f2007edd9768e1f807f\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/25a1433216489de4abc889910f744e952cb6dbae\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/66f74ba9be9daf9c47fface6af3677f602774f6b\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7751f609eadf36b1f53712bae430019c53a16eb0\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8a558261fa57a6deefb0925ab1829f698b194aea\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/91e4ad05bf18322b5921d1a6c9b603f6eb1694f0\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9fc198f415dee070a1de957bb5bf5921d8df3499\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2025-11-21T14:10:36+00:00",
      "cve": "CVE-2021-47361",
      "id": "CVE-2021-47361",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mcb: fix error handling in mcb_alloc_bus()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47361.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-15T02:31:09Z",
      "cve": "CVE-2021-47361",
      "id": "CVE-2021-47361",
      "initial_release_date": "2024-05-23T15:55:54Z",
      "product_status:known_affected": "449",
      "product_status:known_not_affected": "67",
      "product_status:recommended": "522",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-47361",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-47361.json",
      "version": "62"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/8a558261fa57a6deefb0925ab1829f698b194aea\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/115b07d9f47e3996430b8f2007edd9768e1f807f\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/66f74ba9be9daf9c47fface6af3677f602774f6b\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/7751f609eadf36b1f53712bae430019c53a16eb0\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/91e4ad05bf18322b5921d1a6c9b603f6eb1694f0\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/9fc198f415dee070a1de957bb5bf5921d8df3499\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/25a1433216489de4abc889910f744e952cb6dbae\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:32:08.591Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47361\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-05-21T18:23:29.755480Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:01:25.431Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"mcb: fix error handling in mcb_alloc_bus()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"18d28819809909c3f24bb72183a901c5e332a63d\", \"lessThan\": \"8a558261fa57a6deefb0925ab1829f698b194aea\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"18d28819809909c3f24bb72183a901c5e332a63d\", \"lessThan\": \"115b07d9f47e3996430b8f2007edd9768e1f807f\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"18d28819809909c3f24bb72183a901c5e332a63d\", \"lessThan\": \"66f74ba9be9daf9c47fface6af3677f602774f6b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"18d28819809909c3f24bb72183a901c5e332a63d\", \"lessThan\": \"7751f609eadf36b1f53712bae430019c53a16eb0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"18d28819809909c3f24bb72183a901c5e332a63d\", \"lessThan\": \"91e4ad05bf18322b5921d1a6c9b603f6eb1694f0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"18d28819809909c3f24bb72183a901c5e332a63d\", \"lessThan\": \"9fc198f415dee070a1de957bb5bf5921d8df3499\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"18d28819809909c3f24bb72183a901c5e332a63d\", \"lessThan\": \"25a1433216489de4abc889910f744e952cb6dbae\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/mcb/mcb-core.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.7\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.7\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.9.285\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.9.*\"}, {\"status\": \"unaffected\", \"version\": \"4.14.249\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.14.*\"}, {\"status\": \"unaffected\", \"version\": \"4.19.209\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.150\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.70\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.14.9\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.14.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/mcb/mcb-core.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/8a558261fa57a6deefb0925ab1829f698b194aea\"}, {\"url\": \"https://git.kernel.org/stable/c/115b07d9f47e3996430b8f2007edd9768e1f807f\"}, {\"url\": \"https://git.kernel.org/stable/c/66f74ba9be9daf9c47fface6af3677f602774f6b\"}, {\"url\": \"https://git.kernel.org/stable/c/7751f609eadf36b1f53712bae430019c53a16eb0\"}, {\"url\": \"https://git.kernel.org/stable/c/91e4ad05bf18322b5921d1a6c9b603f6eb1694f0\"}, {\"url\": \"https://git.kernel.org/stable/c/9fc198f415dee070a1de957bb5bf5921d8df3499\"}, {\"url\": \"https://git.kernel.org/stable/c/25a1433216489de4abc889910f744e952cb6dbae\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmcb: fix error handling in mcb_alloc_bus()\\n\\nThere are two bugs:\\n1) If ida_simple_get() fails then this code calls put_device(carrier)\\n   but we haven\u0027t yet called get_device(carrier) and probably that\\n   leads to a use after free.\\n2) After device_initialize() then we need to use put_device() to\\n   release the bus.  This will free the internal resources tied to the\\n   device and call mcb_free_bus() which will free the rest.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.285\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.249\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.209\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.150\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.70\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.14.9\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15\", \"versionStartIncluding\": \"4.7\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:09:21.641Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47361\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:09:21.641Z\", \"dateReserved\": \"2024-05-21T14:58:30.809Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-21T15:03:29.882Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.