FKIE_CVE-2021-47571

Vulnerability from fkie_nvd - Published: 2024-05-24 15:15 - Updated: 2026-06-17 04:17
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect() The free_rtllib() function frees the "dev" pointer so there is use after free on the next line. Re-arrange things to avoid that.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2e1ec01af2c7139c6a600bbfaea1a018b35094b6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8d0163cec7de995f9eb9c3128c83fb84f0cb1c64Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9186680382934b0e7529d3d70dcc0a21d087683bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b535917c51acc97fb0761b1edec85f1f3d02bda4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bca19bb2dc2d89ce60c4a4a6e59609d4cf2e13efPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c0ef0e75a858cbd8618b473f22fbca36106dcf82Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d43aecb694b10db9a4228ce2d38b5ae8de374443Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e27ee2f607fe6a9b923ef1fc65461c0613c97594Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2e1ec01af2c7139c6a600bbfaea1a018b35094b6Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8d0163cec7de995f9eb9c3128c83fb84f0cb1c64Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/9186680382934b0e7529d3d70dcc0a21d087683bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b535917c51acc97fb0761b1edec85f1f3d02bda4Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/bca19bb2dc2d89ce60c4a4a6e59609d4cf2e13efPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c0ef0e75a858cbd8618b473f22fbca36106dcf82Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d43aecb694b10db9a4228ce2d38b5ae8de374443Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e27ee2f607fe6a9b923ef1fc65461c0613c97594Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/staging/rtl8192e/rtl8192e/rtl_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d43aecb694b10db9a4228ce2d38b5ae8de374443",
              "status": "affected",
              "version": "66898177e7e5486dc77a4ba742efa4e2e9e900a4",
              "versionType": "git"
            },
            {
              "lessThan": "9186680382934b0e7529d3d70dcc0a21d087683b",
              "status": "affected",
              "version": "66898177e7e5486dc77a4ba742efa4e2e9e900a4",
              "versionType": "git"
            },
            {
              "lessThan": "c0ef0e75a858cbd8618b473f22fbca36106dcf82",
              "status": "affected",
              "version": "66898177e7e5486dc77a4ba742efa4e2e9e900a4",
              "versionType": "git"
            },
            {
              "lessThan": "bca19bb2dc2d89ce60c4a4a6e59609d4cf2e13ef",
              "status": "affected",
              "version": "66898177e7e5486dc77a4ba742efa4e2e9e900a4",
              "versionType": "git"
            },
            {
              "lessThan": "2e1ec01af2c7139c6a600bbfaea1a018b35094b6",
              "status": "affected",
              "version": "66898177e7e5486dc77a4ba742efa4e2e9e900a4",
              "versionType": "git"
            },
            {
              "lessThan": "8d0163cec7de995f9eb9c3128c83fb84f0cb1c64",
              "status": "affected",
              "version": "66898177e7e5486dc77a4ba742efa4e2e9e900a4",
              "versionType": "git"
            },
            {
              "lessThan": "e27ee2f607fe6a9b923ef1fc65461c0613c97594",
              "status": "affected",
              "version": "66898177e7e5486dc77a4ba742efa4e2e9e900a4",
              "versionType": "git"
            },
            {
              "lessThan": "b535917c51acc97fb0761b1edec85f1f3d02bda4",
              "status": "affected",
              "version": "66898177e7e5486dc77a4ba742efa4e2e9e900a4",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/staging/rtl8192e/rtl8192e/rtl_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.2"
            },
            {
              "lessThan": "3.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.4.*",
              "status": "unaffected",
              "version": "4.4.294",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.292",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.257",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.219",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.163",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.83",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C0203844-754E-40C9-AFB3-678A9A9D2490",
              "versionEndExcluding": "4.4.294",
              "versionStartIncluding": "3.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "DB7F6C04-42D3-48A3-892D-2487383B9B6E",
              "versionEndExcluding": "4.9.292",
              "versionStartIncluding": "4.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7080D941-9847-42F5-BA50-0A03CFB61FD1",
              "versionEndExcluding": "4.14.257",
              "versionStartIncluding": "4.10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B9EF0575-6BF6-4AD9-B9A0-5C8D7D71710C",
              "versionEndExcluding": "4.19.219",
              "versionStartIncluding": "4.15",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "80E8F086-C9B9-4987-8B2E-B4A16D1DA7BA",
              "versionEndExcluding": "5.4.163",
              "versionStartIncluding": "4.20",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D4843826-EA9A-472B-82EC-B9E4FD4149AD",
              "versionEndExcluding": "5.10.83",
              "versionStartIncluding": "5.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "990C08FB-0121-4296-896F-556312F8FF3B",
              "versionEndExcluding": "5.15.6",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()\n\nThe free_rtllib() function frees the \"dev\" pointer so there is use\nafter free on the next line.  Re-arrange things to avoid that."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: staging: rtl8192e: Corrige el use after free en _rtl92e_pci_disconnect() La funci\u00f3n free_rtllib() libera el puntero \"dev\" para que haya use after free en la siguiente l\u00ednea. Reorganice las cosas para evitar eso."
    }
  ],
  "id": "CVE-2021-47571",
  "lastModified": "2026-06-17T04:17:47.570",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-47571",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-05-24T19:15:02.697856Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-05-24T15:15:22.607",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2e1ec01af2c7139c6a600bbfaea1a018b35094b6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/8d0163cec7de995f9eb9c3128c83fb84f0cb1c64"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      ],
      "url": "https://git.kernel.org/stable/c/9186680382934b0e7529d3d70dcc0a21d087683b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "url": "https://git.kernel.org/stable/c/b535917c51acc97fb0761b1edec85f1f3d02bda4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
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      "url": "https://git.kernel.org/stable/c/c0ef0e75a858cbd8618b473f22fbca36106dcf82"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d43aecb694b10db9a4228ce2d38b5ae8de374443"
    },
    {
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      "tags": [
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      ],
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2e1ec01af2c7139c6a600bbfaea1a018b35094b6"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/8d0163cec7de995f9eb9c3128c83fb84f0cb1c64"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/9186680382934b0e7529d3d70dcc0a21d087683b"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/b535917c51acc97fb0761b1edec85f1f3d02bda4"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/bca19bb2dc2d89ce60c4a4a6e59609d4cf2e13ef"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "https://git.kernel.org/stable/c/c0ef0e75a858cbd8618b473f22fbca36106dcf82"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d43aecb694b10db9a4228ce2d38b5ae8de374443"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e27ee2f607fe6a9b923ef1fc65461c0613c97594"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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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

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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.