FKIE_CVE-2021-47270

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: usb: fix various gadgets null ptr deref on 10gbps cabling. This avoids a null pointer dereference in f_{ecm,eem,hid,loopback,printer,rndis,serial,sourcesink,subset,tcm} by simply reusing the 5gbps config for 10gbps.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/10770d2ac0094b053c8897d96d7b2737cd72f7c5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4b289a0f3033f465b4fd51ba995251a7867a2aa2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8cd5f45c1b769e3e9e0f4325dd08b6c3749dc7eePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/90c4d05780d47e14a50e11a7f17373104cd47d25Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b4903f7fdc484628d0b8022daf86e2439d3ab4dbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/beb1e67a5ca8d69703c776db9000527f44c0c93cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f17aae7c4009160f0630a91842a281773976a5bcPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/10770d2ac0094b053c8897d96d7b2737cd72f7c5Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4b289a0f3033f465b4fd51ba995251a7867a2aa2Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8cd5f45c1b769e3e9e0f4325dd08b6c3749dc7eePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/90c4d05780d47e14a50e11a7f17373104cd47d25Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b4903f7fdc484628d0b8022daf86e2439d3ab4dbPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/beb1e67a5ca8d69703c776db9000527f44c0c93cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f17aae7c4009160f0630a91842a281773976a5bcPatch
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 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": [
            "drivers/usb/gadget/function/f_ecm.c",
            "drivers/usb/gadget/function/f_eem.c",
            "drivers/usb/gadget/function/f_hid.c",
            "drivers/usb/gadget/function/f_loopback.c",
            "drivers/usb/gadget/function/f_printer.c",
            "drivers/usb/gadget/function/f_rndis.c",
            "drivers/usb/gadget/function/f_serial.c",
            "drivers/usb/gadget/function/f_sourcesink.c",
            "drivers/usb/gadget/function/f_subset.c",
            "drivers/usb/gadget/function/f_tcm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "beb1e67a5ca8d69703c776db9000527f44c0c93c",
              "status": "affected",
              "version": "eaef50c760576bca70b87fdc26eb87a3660529f8",
              "versionType": "git"
            },
            {
              "lessThan": "8cd5f45c1b769e3e9e0f4325dd08b6c3749dc7ee",
              "status": "affected",
              "version": "eaef50c760576bca70b87fdc26eb87a3660529f8",
              "versionType": "git"
            },
            {
              "lessThan": "10770d2ac0094b053c8897d96d7b2737cd72f7c5",
              "status": "affected",
              "version": "eaef50c760576bca70b87fdc26eb87a3660529f8",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "eaef50c760576bca70b87fdc26eb87a3660529f8",
              "versionType": "git"
            },
            {
              "lessThan": "4b289a0f3033f465b4fd51ba995251a7867a2aa2",
              "status": "affected",
              "version": "eaef50c760576bca70b87fdc26eb87a3660529f8",
              "versionType": "git"
            },
            {
              "lessThan": "f17aae7c4009160f0630a91842a281773976a5bc",
              "status": "affected",
              "version": "eaef50c760576bca70b87fdc26eb87a3660529f8",
              "versionType": "git"
            },
            {
              "lessThan": "90c4d05780d47e14a50e11a7f17373104cd47d25",
              "status": "affected",
              "version": "eaef50c760576bca70b87fdc26eb87a3660529f8",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/function/f_ecm.c",
            "drivers/usb/gadget/function/f_eem.c",
            "drivers/usb/gadget/function/f_hid.c",
            "drivers/usb/gadget/function/f_loopback.c",
            "drivers/usb/gadget/function/f_printer.c",
            "drivers/usb/gadget/function/f_rndis.c",
            "drivers/usb/gadget/function/f_serial.c",
            "drivers/usb/gadget/function/f_sourcesink.c",
            "drivers/usb/gadget/function/f_subset.c",
            "drivers/usb/gadget/function/f_tcm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.6"
            },
            {
              "lessThan": "4.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.273",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.237",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.195",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.126",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.11",
              "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": "D5D59008-75DC-4F3B-AB6C-928253F4977F",
              "versionEndExcluding": "4.9.273",
              "versionStartIncluding": "4.6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "83CDDAD5-5539-46C9-9255-C1DAC38F7905",
              "versionEndExcluding": "4.14.237",
              "versionStartIncluding": "4.10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "23EECCE9-4D4C-4684-AB00-10C938F5DDC1",
              "versionEndExcluding": "4.19.195",
              "versionStartIncluding": "4.15",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "876275F9-BEC7-40E8-9D7F-A20729A4A4FF",
              "versionEndExcluding": "5.4.126",
              "versionStartIncluding": "4.20",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "DA547B08-9D25-467B-AD0D-8460FE4EE70D",
              "versionEndExcluding": "5.10.44",
              "versionStartIncluding": "5.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F914A757-FAFD-407E-9031-21F66635D5EA",
              "versionEndExcluding": "5.12.11",
              "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
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: fix various gadgets null ptr deref on 10gbps cabling.\n\nThis avoids a null pointer dereference in\nf_{ecm,eem,hid,loopback,printer,rndis,serial,sourcesink,subset,tcm}\nby simply reusing the 5gbps config for 10gbps."
    },
    {
      "lang": "es",
      "value": " En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: usb: repara varios gadgets null ptr deref en cableado de 10gbps. Esto evita una desreferencia de puntero null en f_{ecm,eem,hid,loopback,printer,rndis,serial,sourcesink,subset,tcm} simplemente reutilizando la configuraci\u00f3n de 5 gbps para 10 gbps."
    }
  ],
  "id": "CVE-2021-47270",
  "lastModified": "2026-06-17T04:17:03.850",
  "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-2021-47270",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-10T15:39:41.783429Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-05-21T15:15:15.540",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    },
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    },
    {
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      "url": "https://git.kernel.org/stable/c/f17aae7c4009160f0630a91842a281773976a5bc"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "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

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.