CVE-2021-47404 (GCVE-0-2021-47404)

Vulnerability from cvelistv5 – Published: 2024-05-21 15:03 – Updated: 2026-05-11 13:54
VLAI
Title
HID: betop: fix slab-out-of-bounds Write in betop_probe
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: betop: fix slab-out-of-bounds Write in betop_probe Syzbot reported slab-out-of-bounds Write bug in hid-betopff driver. The problem is the driver assumes the device must have an input report but some malicious devices violate this assumption. So this patch checks hid_device's input is non empty before it's been used.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-11 17:40 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 52cd7785f3cdd2724f4efb5b21dbc75d6f9ccef4 , < a4faa7153b87fbcfe4be15f4278676f79ca6e019 (git)
Affected: 52cd7785f3cdd2724f4efb5b21dbc75d6f9ccef4 , < 6fc4476dda58f6c00097c7ddec3b772513f57525 (git)
Affected: 52cd7785f3cdd2724f4efb5b21dbc75d6f9ccef4 , < 1c83c38dec83d57bc18d0c01d82c413d3b34ccb9 (git)
Affected: 52cd7785f3cdd2724f4efb5b21dbc75d6f9ccef4 , < bb8b72374db69afa25a5b65cf1c092860c6fe914 (git)
Affected: 52cd7785f3cdd2724f4efb5b21dbc75d6f9ccef4 , < fe9bb925e7096509711660d39c0493a1546e9550 (git)
Affected: 52cd7785f3cdd2724f4efb5b21dbc75d6f9ccef4 , < dedfc35a2de2bae9fa3da8210a05bfd515f83fee (git)
Affected: 52cd7785f3cdd2724f4efb5b21dbc75d6f9ccef4 , < 708107b80aa616976d1c5fa60ac0c1390749db5e (git)
Affected: 52cd7785f3cdd2724f4efb5b21dbc75d6f9ccef4 , < 1e4ce418b1cb1a810256b5fb3fd33d22d1325993 (git)
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Linux Linux Affected: 4.0
Unaffected: 0 , < 4.0 (semver)
Unaffected: 4.4.286 , ≤ 4.4.* (semver)
Unaffected: 4.9.285 , ≤ 4.9.* (semver)
Unaffected: 4.14.249 , ≤ 4.14.* (semver)
Unaffected: 4.19.209 , ≤ 4.19.* (semver)
Unaffected: 5.4.151 , ≤ 5.4.* (semver)
Unaffected: 5.10.71 , ≤ 5.10.* (semver)
Unaffected: 5.14.10 , ≤ 5.14.* (semver)
Unaffected: 5.15 , ≤ * (original_commit_for_fix)
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                  "versionType": "git"
                },
                {
                  "lessThan": "1e4ce418b1cb1a810256b5fb3fd33d22d1325993",
                  "status": "affected",
                  "version": "52cd7785f3cdd2724f4efb5b21dbc75d6f9ccef4",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/hid/hid-betopff.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "4.0"
                },
                {
                  "lessThan": "4.0",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "4.4.*",
                  "status": "unaffected",
                  "version": "4.4.286",
                  "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": "5.4.151",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.71",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.14.*",
                  "status": "unaffected",
                  "version": "5.14.10",
                  "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": "4.4.286",
                      "versionStartIncluding": "4.0",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "4.9.285",
                      "versionStartIncluding": "4.0",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "4.14.249",
                      "versionStartIncluding": "4.0",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "4.19.209",
                      "versionStartIncluding": "4.0",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.4.151",
                      "versionStartIncluding": "4.0",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.71",
                      "versionStartIncluding": "4.0",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.14.10",
                      "versionStartIncluding": "4.0",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15",
                      "versionStartIncluding": "4.0",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: betop: fix slab-out-of-bounds Write in betop_probe\n\nSyzbot reported slab-out-of-bounds Write bug in hid-betopff driver.\nThe problem is the driver assumes the device must have an input report but\nsome malicious devices violate this assumption.\n\nSo this patch checks hid_device\u0027s input is non empty before it\u0027s been used."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T13:54:02.901Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/a4faa7153b87fbcfe4be15f4278676f79ca6e019"
            },
            {
              "url": "https://git.kernel.org/stable/c/6fc4476dda58f6c00097c7ddec3b772513f57525"
            },
            {
              "url": "https://git.kernel.org/stable/c/1c83c38dec83d57bc18d0c01d82c413d3b34ccb9"
            },
            {
              "url": "https://git.kernel.org/stable/c/bb8b72374db69afa25a5b65cf1c092860c6fe914"
            },
            {
              "url": "https://git.kernel.org/stable/c/fe9bb925e7096509711660d39c0493a1546e9550"
            },
            {
              "url": "https://git.kernel.org/stable/c/dedfc35a2de2bae9fa3da8210a05bfd515f83fee"
            },
            {
              "url": "https://git.kernel.org/stable/c/708107b80aa616976d1c5fa60ac0c1390749db5e"
            },
            {
              "url": "https://git.kernel.org/stable/c/1e4ce418b1cb1a810256b5fb3fd33d22d1325993"
            }
          ],
          "title": "HID: betop: fix slab-out-of-bounds Write in betop_probe",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2021-47404",
        "datePublished": "2024-05-21T15:03:58.021Z",
        "dateReserved": "2024-05-21T14:58:30.816Z",
        "dateUpdated": "2026-05-11T13:54:02.901Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.



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.