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CVE-2022-50876

Estado: AplazadaSin puntuar—

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.

Detalles técnicos trazas, registros y código del informe original
Fix it by add the length check :
fifocnt = min_t(unsigned, request->length - request->actual, fifocnt);

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2022-50876",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
              "lessThan": "826f84ab04a5cafe484ea9c2c85a3930068e5cb7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
              "lessThan": "a1008c8b9f357691ce6a8fdb8f157aecb2d79167",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
              "lessThan": "7c80f3a918ba9aa26fb699ee887064ec3af0396a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
              "lessThan": "d6afcab1b48f4051211c50145b9e91be3b1b42c9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
              "lessThan": "acf0006f2b2b2ca672988875fd154429aafb2a9b",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "3c84c7f592c4ba38f54ddaddd0115acc443025db",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
              "lessThan": "a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
              "lessThan": "523313881f0aa5cbbdb548ce575b6e58b202bd76",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "03840fad004ce8a56bc8b3bb60a2df10f6f9481e",
              "lessThan": "eea4c860c3b366369eff0489d94ee4f0571d467d",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/usb/musb/musb_gadget.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.3"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.3",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.9.331",
              "versionType": "semver",
              "lessThanOrEqual": "4.9.*"
            },
            {
              "status": "unaffected",
              "version": "4.14.296",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "status": "unaffected",
              "version": "4.19.262",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "status": "unaffected",
              "version": "5.4.220",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.150",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.75",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "5.19.17",
              "versionType": "semver",
              "lessThanOrEqual": "5.19.*"
            },
            {
              "status": "unaffected",
              "version": "6.0.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/usb/musb/musb_gadget.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-30T13:16:02.610",
  "references": [
    {
      "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",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "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->length > musb_ep->packet_sz)\nand (is_buffer_mapped(req) return false),the rxstate() will copy all data\nin fifo to request->buf which may cause request->buf out of bounds.\n\nFix it by add the length check :\nfifocnt = min_t(unsigned, request->length - request->actual, fifocnt);"
    }
  ],
  "lastModified": "2026-06-17T05:24:20.200",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}