Vulnerability-Lookup

FKIE_CVE-2021-47251

Vulnerability from fkie_nvd - Published: 2024-05-21 15:15 - Updated: 2025-04-30 15:18

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: mac80211: fix skb length check in ieee80211_scan_rx() Replace hard-coded compile-time constants for header length check with dynamic determination based on the frame type. Otherwise, we hit a validation WARN_ON in cfg80211 later. [style fixes, reword commit message]

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5a1cd67a801cf5ef989c4783e07b86a25b143126	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d1b949c70206178b12027f66edc088d40375b5cb	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e298aa358f0ca658406d524b6639fe389cb6e11e	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/5a1cd67a801cf5ef989c4783e07b86a25b143126	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/d1b949c70206178b12027f66edc088d40375b5cb	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/e298aa358f0ca658406d524b6639fe389cb6e11e	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	5.13
linux	linux_kernel	5.13
linux	linux_kernel	5.13
linux	linux_kernel	5.13
linux	linux_kernel	5.13
linux	linux_kernel	5.13

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "FD0C8733-D75B-4E30-9D46-CFE48CF2CC1E",
              "versionEndExcluding": "5.10.46",
              "versionStartIncluding": "5.10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7806E7E5-6D4F-4E18-81C1-79B3C60EE855",
              "versionEndExcluding": "5.12.13",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "96AC23B2-D46A-49D9-8203-8E1BEDCA8532",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "DA610E30-717C-4700-9F77-A3C9244F3BFD",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*",
              "matchCriteriaId": "1ECD33F5-85BE-430B-8F86-8D7BD560311D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:*",
              "matchCriteriaId": "CF351855-2437-4CF5-AD7C-BDFA51F27683",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc6:*:*:*:*:*:*",
              "matchCriteriaId": "25A855BA-2118-44F2-90EF-EBBB12AF51EF",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmac80211: fix skb length check in ieee80211_scan_rx()\n\nReplace hard-coded compile-time constants for header length check\nwith dynamic determination based on the frame type. Otherwise, we\nhit a validation WARN_ON in cfg80211 later.\n\n[style fixes, reword commit message]"
    },
    {
      "lang": "es",
      "value": " En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: mac80211: corrige la verificaci\u00f3n de longitud de skb en ieee80211_scan_rx() Reemplace las constantes de tiempo de compilaci\u00f3n codificadas para la verificaci\u00f3n de la longitud del encabezado con determinaci\u00f3n din\u00e1mica basada en el tipo de trama. De lo contrario, obtendremos un WARN_ON de validaci\u00f3n en cfg80211 m\u00e1s adelante. [correcciones de estilo, reformular mensaje de confirmaci\u00f3n]"
    }
  ],
  "id": "CVE-2021-47251",
  "lastModified": "2025-04-30T15:18:22.460",
  "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"
      }
    ]
  },
  "published": "2024-05-21T15:15:14.007",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/5a1cd67a801cf5ef989c4783e07b86a25b143126"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d1b949c70206178b12027f66edc088d40375b5cb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e298aa358f0ca658406d524b6639fe389cb6e11e"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/5a1cd67a801cf5ef989c4783e07b86a25b143126"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d1b949c70206178b12027f66edc088d40375b5cb"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e298aa358f0ca658406d524b6639fe389cb6e11e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1284"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2021-47251 (GCVE-0-2021-47251)

Vulnerability from cvelistv5 – Published: 2024-05-21 14:19 – Updated: 2025-05-04 07:07

Title

mac80211: fix skb length check in ieee80211_scan_rx()

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/5a1cd67a801cf5ef9…
	https://git.kernel.org/stable/c/d1b949c70206178b1…
	https://git.kernel.org/stable/c/e298aa358f0ca6584…

Impacted products

Vendor

Product

Version

Linux

Affected: cd418ba63f0c2f6157f35a41c9accc6ecb52590a , < 5a1cd67a801cf5ef989c4783e07b86a25b143126 (git)
Affected: cd418ba63f0c2f6157f35a41c9accc6ecb52590a , < d1b949c70206178b12027f66edc088d40375b5cb (git)
Affected: cd418ba63f0c2f6157f35a41c9accc6ecb52590a , < e298aa358f0ca658406d524b6639fe389cb6e11e (git)

Linux

Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 5.10.46 , ≤ 5.10.* (semver)
Unaffected: 5.12.13 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47251",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-21T18:50:58.000739Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:15:18.474Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:32:08.012Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/5a1cd67a801cf5ef989c4783e07b86a25b143126"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/d1b949c70206178b12027f66edc088d40375b5cb"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/e298aa358f0ca658406d524b6639fe389cb6e11e"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/scan.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5a1cd67a801cf5ef989c4783e07b86a25b143126",
              "status": "affected",
              "version": "cd418ba63f0c2f6157f35a41c9accc6ecb52590a",
              "versionType": "git"
            },
            {
              "lessThan": "d1b949c70206178b12027f66edc088d40375b5cb",
              "status": "affected",
              "version": "cd418ba63f0c2f6157f35a41c9accc6ecb52590a",
              "versionType": "git"
            },
            {
              "lessThan": "e298aa358f0ca658406d524b6639fe389cb6e11e",
              "status": "affected",
              "version": "cd418ba63f0c2f6157f35a41c9accc6ecb52590a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/scan.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.10"
            },
            {
              "lessThan": "5.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.46",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.12.13",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.13",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmac80211: fix skb length check in ieee80211_scan_rx()\n\nReplace hard-coded compile-time constants for header length check\nwith dynamic determination based on the frame type. Otherwise, we\nhit a validation WARN_ON in cfg80211 later.\n\n[style fixes, reword commit message]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T07:07:09.917Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5a1cd67a801cf5ef989c4783e07b86a25b143126"
        },
        {
          "url": "https://git.kernel.org/stable/c/d1b949c70206178b12027f66edc088d40375b5cb"
        },
        {
          "url": "https://git.kernel.org/stable/c/e298aa358f0ca658406d524b6639fe389cb6e11e"
        }
      ],
      "title": "mac80211: fix skb length check in ieee80211_scan_rx()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47251",
    "datePublished": "2024-05-21T14:19:47.534Z",
    "dateReserved": "2024-04-10T18:59:19.537Z",
    "dateUpdated": "2025-05-04T07:07:09.917Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

FKIE_CVE-2021-47251

CVE-2021-47251 (GCVE-0-2021-47251)

Tags

Sightings

Nomenclature