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CVE-2022-50156 (GCVE-0-2022-50156)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:03 – Updated: 2026-08-05 08:57
VLAI
Title
HID: cp2112: prevent a buffer overflow in cp2112_xfer()
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: cp2112: prevent a buffer overflow in cp2112_xfer() Smatch warnings: drivers/hid/hid-cp2112.c:793 cp2112_xfer() error: __memcpy() 'data->block[1]' too small (33 vs 255) drivers/hid/hid-cp2112.c:793 cp2112_xfer() error: __memcpy() 'buf' too small (64 vs 255) The 'read_length' variable is provided by 'data->block[0]' which comes from user and it(read_length) can take a value between 0-255. Add an upper bound to 'read_length' variable to prevent a buffer overflow in memcpy().
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 , < 3af7d60e9a6c17d6d41c4341f8020511887d372d (git)
Affected: 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 , < 519ff31a6ddd87aa4905bd9bf3b92e8b88801614 (git)
Affected: 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 , < ebda3d6b004bb6127a66a616524a2de152302ca7 (git)
Affected: 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 , < 8489a20ac481b08c0391608d81ed3796d373cfdf (git)
Affected: 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 , < e7028944e61014ae915e7fb74963d3835f2f761a (git)
Affected: 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 , < 26e427ac85c2b8d0d108cc80b6de34d33e2780c4 (git)
Affected: 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 , < 381583845d19cb4bd21c8193449385f3fefa9caf (git)
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Linux Linux Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 4.19.256 , ≤ 4.19.* (semver)
Unaffected: 5.4.211 , ≤ 5.4.* (semver)
Unaffected: 5.10.137 , ≤ 5.10.* (semver)
Unaffected: 5.15.61 , ≤ 5.15.* (semver)
Unaffected: 5.18.18 , ≤ 5.18.* (semver)
Unaffected: 5.19.2 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
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            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: HID: cp2112: evitar un desbordamiento de b\u00fafer en cp2112_xfer() Advertencias de Smatch: drivers/hid/hid-cp2112.c:793 Error de cp2112_xfer(): __memcpy() \u0027data-\u0026gt;block[1]\u0027 demasiado peque\u00f1o (33 frente a 255) drivers/hid/hid-cp2112.c:793 Error de cp2112_xfer(): __memcpy() \u0027buf\u0027 demasiado peque\u00f1o (64 frente a 255) La variable \u0027read_length\u0027 la proporciona \u0027data-\u0026gt;block[0]\u0027, que proviene del usuario, y puede tomar un valor entre 0 y 255. A\u00f1ada un l\u00edmite superior a la variable \u0027read_length\u0027 para evitar un desbordamiento de b\u00fafer en memcpy()."
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        "id": "CVE-2022-50156",
        "lastModified": "2026-08-04T10:18:06.150",
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                "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": "2025-06-18T11:15:45.747",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/26e427ac85c2b8d0d108cc80b6de34d33e2780c4"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/381583845d19cb4bd21c8193449385f3fefa9caf"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/3af7d60e9a6c17d6d41c4341f8020511887d372d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/519ff31a6ddd87aa4905bd9bf3b92e8b88801614"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/8489a20ac481b08c0391608d81ed3796d373cfdf"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/e7028944e61014ae915e7fb74963d3835f2f761a"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/ebda3d6b004bb6127a66a616524a2de152302ca7"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-787"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T19:39:57+00:00",
      "cve": "CVE-2022-50156",
      "id": "CVE-2022-50156",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "201",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "166",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: HID: cp2112: prevent a buffer overflow in cp2112_xfer()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50156.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T02:22:50Z",
      "cve": "CVE-2022-50156",
      "id": "CVE-2022-50156",
      "initial_release_date": "2025-06-19T03:40:18Z",
      "product_status:known_affected": "370",
      "product_status:known_not_affected": "360",
      "product_status:recommended": "300",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50156",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50156.json",
      "version": "47"
    }
  }
}



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Taxonomy of the tags.





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.


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.