FKIE_CVE-2021-47252

Vulnerability from fkie_nvd - Published: 2024-05-21 15:15 - Updated: 2026-06-17 04:17
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: batman-adv: Avoid WARN_ON timing related checks The soft/batadv interface for a queued OGM can be changed during the time the OGM was queued for transmission and when the OGM is actually transmitted by the worker. But WARN_ON must be used to denote kernel bugs and not to print simple warnings. A warning can simply be printed using pr_warn.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/282baa8104af44e04c4af3e7f933b44267c7f86fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2eb4e0b3631832a4291c8bf4c9db873f60b128c8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/45011f2973f6b52cf50db397bb27bf805f5f0e7fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6031daaaf6d5c359c99dfffa102e332df234ff09Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/77a99aad5bc3ea105806ebae6be3cbadc2fc615ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9f460ae31c4435fd022c443a6029352217a16ac1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e7fbd8184fa9e85f0d648c499841cb7ff6dec9f4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e8e9d2968a9d08bf5c683afca182f1537edebf8dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/282baa8104af44e04c4af3e7f933b44267c7f86fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2eb4e0b3631832a4291c8bf4c9db873f60b128c8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/45011f2973f6b52cf50db397bb27bf805f5f0e7fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6031daaaf6d5c359c99dfffa102e332df234ff09Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/77a99aad5bc3ea105806ebae6be3cbadc2fc615ePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/9f460ae31c4435fd022c443a6029352217a16ac1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e7fbd8184fa9e85f0d648c499841cb7ff6dec9f4Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e8e9d2968a9d08bf5c683afca182f1537edebf8dPatch
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 *
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
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/batman-adv/bat_iv_ogm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "45011f2973f6b52cf50db397bb27bf805f5f0e7f",
              "status": "affected",
              "version": "ef0a937f7a1450d3a133ccd83c9c7d07587e7a00",
              "versionType": "git"
            },
            {
              "lessThan": "6031daaaf6d5c359c99dfffa102e332df234ff09",
              "status": "affected",
              "version": "ef0a937f7a1450d3a133ccd83c9c7d07587e7a00",
              "versionType": "git"
            },
            {
              "lessThan": "77a99aad5bc3ea105806ebae6be3cbadc2fc615e",
              "status": "affected",
              "version": "ef0a937f7a1450d3a133ccd83c9c7d07587e7a00",
              "versionType": "git"
            },
            {
              "lessThan": "e8e9d2968a9d08bf5c683afca182f1537edebf8d",
              "status": "affected",
              "version": "ef0a937f7a1450d3a133ccd83c9c7d07587e7a00",
              "versionType": "git"
            },
            {
              "lessThan": "e7fbd8184fa9e85f0d648c499841cb7ff6dec9f4",
              "status": "affected",
              "version": "ef0a937f7a1450d3a133ccd83c9c7d07587e7a00",
              "versionType": "git"
            },
            {
              "lessThan": "282baa8104af44e04c4af3e7f933b44267c7f86f",
              "status": "affected",
              "version": "ef0a937f7a1450d3a133ccd83c9c7d07587e7a00",
              "versionType": "git"
            },
            {
              "lessThan": "2eb4e0b3631832a4291c8bf4c9db873f60b128c8",
              "status": "affected",
              "version": "ef0a937f7a1450d3a133ccd83c9c7d07587e7a00",
              "versionType": "git"
            },
            {
              "lessThan": "9f460ae31c4435fd022c443a6029352217a16ac1",
              "status": "affected",
              "version": "ef0a937f7a1450d3a133ccd83c9c7d07587e7a00",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/batman-adv/bat_iv_ogm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.14"
            },
            {
              "lessThan": "3.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.4.*",
              "status": "unaffected",
              "version": "4.4.293",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.274",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.238",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.196",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.128",
              "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"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0371C13D-9CD9-4497-8E6D-EB0CC0736817",
              "versionEndExcluding": "4.4.293",
              "versionStartIncluding": "3.14",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0A84D5BC-006F-41C5-A54D-6D45236009B3",
              "versionEndExcluding": "4.9.274",
              "versionStartIncluding": "4.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C3C0DBBF-0923-4D2A-9178-134691F9933F",
              "versionEndExcluding": "4.14.238",
              "versionStartIncluding": "4.10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F3CAB837-7D38-4934-AD4F-195CEFD754E6",
              "versionEndExcluding": "4.19.196",
              "versionStartIncluding": "4.15",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6267BD4E-BE25-48B5-B850-4B493440DAFA",
              "versionEndExcluding": "5.4.128",
              "versionStartIncluding": "4.20",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "59455D13-A902-42E1-97F7-5ED579777193",
              "versionEndExcluding": "5.10.46",
              "versionStartIncluding": "5.5",
              "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\nbatman-adv: Avoid WARN_ON timing related checks\n\nThe soft/batadv interface for a queued OGM can be changed during the time\nthe OGM was queued for transmission and when the OGM is actually\ntransmitted by the worker.\n\nBut WARN_ON must be used to denote kernel bugs and not to print simple\nwarnings. A warning can simply be printed using pr_warn."
    },
    {
      "lang": "es",
      "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: batman-adv: Evite comprobaciones relacionadas con el tiempo WARN_ON. La interfaz soft/batadv para un MDS en cola se puede cambiar durante el tiempo que el MDS estuvo en cola para transmisi\u00f3n y cuando el MDS realmente se transmite por el trabajador. Pero WARN_ON debe usarse para indicar errores del kernel y no para imprimir simples advertencias. Una advertencia se puede imprimir simplemente usando pr_warn."
    }
  ],
  "id": "CVE-2021-47252",
  "lastModified": "2026-06-17T04:17:01.143",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-47252",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-06-12T15:03:55.187131Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-05-21T15:15:14.083",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/282baa8104af44e04c4af3e7f933b44267c7f86f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2eb4e0b3631832a4291c8bf4c9db873f60b128c8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/45011f2973f6b52cf50db397bb27bf805f5f0e7f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/6031daaaf6d5c359c99dfffa102e332df234ff09"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/77a99aad5bc3ea105806ebae6be3cbadc2fc615e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/9f460ae31c4435fd022c443a6029352217a16ac1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e7fbd8184fa9e85f0d648c499841cb7ff6dec9f4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e8e9d2968a9d08bf5c683afca182f1537edebf8d"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/282baa8104af44e04c4af3e7f933b44267c7f86f"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2eb4e0b3631832a4291c8bf4c9db873f60b128c8"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/45011f2973f6b52cf50db397bb27bf805f5f0e7f"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/6031daaaf6d5c359c99dfffa102e332df234ff09"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/77a99aad5bc3ea105806ebae6be3cbadc2fc615e"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/9f460ae31c4435fd022c443a6029352217a16ac1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e7fbd8184fa9e85f0d648c499841cb7ff6dec9f4"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e8e9d2968a9d08bf5c683afca182f1537edebf8d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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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.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
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