GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2022-50876 (GCVE-0-2022-50876)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:23 – Updated: 2026-05-11 19:26
VLAI
Title
usb: musb: Fix musb_gadget.c rxstate overflow bug
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: musb: Fix musb_gadget.c rxstate overflow bug The usb function device call musb_gadget_queue() adds the passed request to musb_ep::req_list,If the (request->length > musb_ep->packet_sz) and (is_buffer_mapped(req) return false),the rxstate() will copy all data in fifo to request->buf which may cause request->buf out of bounds. Fix it by add the length check : fifocnt = min_t(unsigned, request->length - request->actual, fifocnt);
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 03840fad004ce8a56bc8b3bb60a2df10f6f9481e , < 826f84ab04a5cafe484ea9c2c85a3930068e5cb7 (git)
Affected: 03840fad004ce8a56bc8b3bb60a2df10f6f9481e , < a1008c8b9f357691ce6a8fdb8f157aecb2d79167 (git)
Affected: 03840fad004ce8a56bc8b3bb60a2df10f6f9481e , < 7c80f3a918ba9aa26fb699ee887064ec3af0396a (git)
Affected: 03840fad004ce8a56bc8b3bb60a2df10f6f9481e , < d6afcab1b48f4051211c50145b9e91be3b1b42c9 (git)
Affected: 03840fad004ce8a56bc8b3bb60a2df10f6f9481e , < acf0006f2b2b2ca672988875fd154429aafb2a9b (git)
Affected: 03840fad004ce8a56bc8b3bb60a2df10f6f9481e , < 3c84c7f592c4ba38f54ddaddd0115acc443025db (git)
Affected: 03840fad004ce8a56bc8b3bb60a2df10f6f9481e , < a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96 (git)
Affected: 03840fad004ce8a56bc8b3bb60a2df10f6f9481e , < 523313881f0aa5cbbdb548ce575b6e58b202bd76 (git)
Affected: 03840fad004ce8a56bc8b3bb60a2df10f6f9481e , < eea4c860c3b366369eff0489d94ee4f0571d467d (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.3
Unaffected: 0 , < 4.3 (semver)
Unaffected: 4.9.331 , ≤ 4.9.* (semver)
Unaffected: 4.14.296 , ≤ 4.14.* (semver)
Unaffected: 4.19.262 , ≤ 4.19.* (semver)
Unaffected: 5.4.220 , ≤ 5.4.* (semver)
Unaffected: 5.10.150 , ≤ 5.10.* (semver)
Unaffected: 5.15.75 , ≤ 5.15.* (semver)
Unaffected: 5.19.17 , ≤ 5.19.* (semver)
Unaffected: 6.0.3 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/musb/musb_gadget.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "826f84ab04a5cafe484ea9c2c85a3930068e5cb7",
              "status": "affected",
              "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
              "versionType": "git"
            },
            {
              "lessThan": "a1008c8b9f357691ce6a8fdb8f157aecb2d79167",
              "status": "affected",
              "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
              "versionType": "git"
            },
            {
              "lessThan": "7c80f3a918ba9aa26fb699ee887064ec3af0396a",
              "status": "affected",
              "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
              "versionType": "git"
            },
            {
              "lessThan": "d6afcab1b48f4051211c50145b9e91be3b1b42c9",
              "status": "affected",
              "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
              "versionType": "git"
            },
            {
              "lessThan": "acf0006f2b2b2ca672988875fd154429aafb2a9b",
              "status": "affected",
              "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
              "versionType": "git"
            },
            {
              "lessThan": "3c84c7f592c4ba38f54ddaddd0115acc443025db",
              "status": "affected",
              "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
              "versionType": "git"
            },
            {
              "lessThan": "a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96",
              "status": "affected",
              "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
              "versionType": "git"
            },
            {
              "lessThan": "523313881f0aa5cbbdb548ce575b6e58b202bd76",
              "status": "affected",
              "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
              "versionType": "git"
            },
            {
              "lessThan": "eea4c860c3b366369eff0489d94ee4f0571d467d",
              "status": "affected",
              "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/musb/musb_gadget.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.3"
            },
            {
              "lessThan": "4.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.331",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.296",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.262",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.220",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.150",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.331",
                  "versionStartIncluding": "4.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.296",
                  "versionStartIncluding": "4.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.262",
                  "versionStartIncluding": "4.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.220",
                  "versionStartIncluding": "4.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.150",
                  "versionStartIncluding": "4.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.75",
                  "versionStartIncluding": "4.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.17",
                  "versionStartIncluding": "4.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.3",
                  "versionStartIncluding": "4.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "4.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: musb: Fix musb_gadget.c rxstate overflow bug\n\nThe usb function device call musb_gadget_queue() adds the passed\nrequest to musb_ep::req_list,If the (request-\u003elength \u003e musb_ep-\u003epacket_sz)\nand (is_buffer_mapped(req) return false),the rxstate() will copy all data\nin fifo to request-\u003ebuf which may cause request-\u003ebuf out of bounds.\n\nFix it by add the length check :\nfifocnt = min_t(unsigned, request-\u003elength - request-\u003eactual, fifocnt);"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:26:50.207Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/826f84ab04a5cafe484ea9c2c85a3930068e5cb7"
        },
        {
          "url": "https://git.kernel.org/stable/c/a1008c8b9f357691ce6a8fdb8f157aecb2d79167"
        },
        {
          "url": "https://git.kernel.org/stable/c/7c80f3a918ba9aa26fb699ee887064ec3af0396a"
        },
        {
          "url": "https://git.kernel.org/stable/c/d6afcab1b48f4051211c50145b9e91be3b1b42c9"
        },
        {
          "url": "https://git.kernel.org/stable/c/acf0006f2b2b2ca672988875fd154429aafb2a9b"
        },
        {
          "url": "https://git.kernel.org/stable/c/3c84c7f592c4ba38f54ddaddd0115acc443025db"
        },
        {
          "url": "https://git.kernel.org/stable/c/a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96"
        },
        {
          "url": "https://git.kernel.org/stable/c/523313881f0aa5cbbdb548ce575b6e58b202bd76"
        },
        {
          "url": "https://git.kernel.org/stable/c/eea4c860c3b366369eff0489d94ee4f0571d467d"
        }
      ],
      "title": "usb: musb: Fix musb_gadget.c rxstate overflow bug",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50876",
    "datePublished": "2025-12-30T12:23:16.790Z",
    "dateReserved": "2025-12-30T12:06:07.137Z",
    "dateUpdated": "2026-05-11T19:26:50.207Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-50876",
      "date": "2026-09-20",
      "epss": "0.00227",
      "percentile": "0.13757"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/usb/musb/musb_gadget.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "826f84ab04a5cafe484ea9c2c85a3930068e5cb7",
                    "status": "affected",
                    "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "a1008c8b9f357691ce6a8fdb8f157aecb2d79167",
                    "status": "affected",
                    "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "7c80f3a918ba9aa26fb699ee887064ec3af0396a",
                    "status": "affected",
                    "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "d6afcab1b48f4051211c50145b9e91be3b1b42c9",
                    "status": "affected",
                    "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "acf0006f2b2b2ca672988875fd154429aafb2a9b",
                    "status": "affected",
                    "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "3c84c7f592c4ba38f54ddaddd0115acc443025db",
                    "status": "affected",
                    "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96",
                    "status": "affected",
                    "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "523313881f0aa5cbbdb548ce575b6e58b202bd76",
                    "status": "affected",
                    "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "eea4c860c3b366369eff0489d94ee4f0571d467d",
                    "status": "affected",
                    "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/usb/musb/musb_gadget.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "4.3"
                  },
                  {
                    "lessThan": "4.3",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.9.*",
                    "status": "unaffected",
                    "version": "4.9.331",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.14.*",
                    "status": "unaffected",
                    "version": "4.14.296",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.19.*",
                    "status": "unaffected",
                    "version": "4.19.262",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.4.*",
                    "status": "unaffected",
                    "version": "5.4.220",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.150",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.75",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.19.*",
                    "status": "unaffected",
                    "version": "5.19.17",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.0.*",
                    "status": "unaffected",
                    "version": "6.0.3",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.1",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: musb: Fix musb_gadget.c rxstate overflow bug\n\nThe usb function device call musb_gadget_queue() adds the passed\nrequest to musb_ep::req_list,If the (request-\u003elength \u003e musb_ep-\u003epacket_sz)\nand (is_buffer_mapped(req) return false),the rxstate() will copy all data\nin fifo to request-\u003ebuf which may cause request-\u003ebuf out of bounds.\n\nFix it by add the length check :\nfifocnt = min_t(unsigned, request-\u003elength - request-\u003eactual, fifocnt);"
          }
        ],
        "id": "CVE-2022-50876",
        "lastModified": "2026-06-17T05:24:20.200",
        "metrics": {},
        "published": "2025-12-30T13:16:02.610",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/3c84c7f592c4ba38f54ddaddd0115acc443025db"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/523313881f0aa5cbbdb548ce575b6e58b202bd76"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/7c80f3a918ba9aa26fb699ee887064ec3af0396a"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/826f84ab04a5cafe484ea9c2c85a3930068e5cb7"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/a1008c8b9f357691ce6a8fdb8f157aecb2d79167"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/acf0006f2b2b2ca672988875fd154429aafb2a9b"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/d6afcab1b48f4051211c50145b9e91be3b1b42c9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/eea4c860c3b366369eff0489d94ee4f0571d467d"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:13:56+00:00",
      "cve": "CVE-2022-50876",
      "id": "CVE-2022-50876",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: usb: musb: Fix musb_gadget.c rxstate overflow bug",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50876.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
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.