FKIE_CVE-2025-37813

Vulnerability from fkie_nvd - Published: 2025-05-08 07:15 - Updated: 2026-10-15 22:18
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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: xhci: Fix invalid pointer dereference in Etron workaround This check is performed before prepare_transfer() and prepare_ring(), so enqueue can already point at the final link TRB of a segment. And indeed it will, some 0.4% of times this code is called. Then enqueue + 1 is an invalid pointer. It will crash the kernel right away or load some junk which may look like a link TRB and cause the real link TRB to be replaced with a NOOP. This wouldn't end well. Use a functionally equivalent test which doesn't dereference the pointer and always gives correct result. Something has crashed my machine twice in recent days while playing with an Etron HC, and a control transfer stress test ran for confirmation has just crashed it again. The same test passes with this patch applied.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0624e29c595b05e7a0e6d1c368f0a05799928e30Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/142273a49f2c315eabdbdf5a71c15e479b75ca91Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1ea050da5562af9b930d17cbbe9632d30f5df43aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bce3055b08e303e28a8751f6073066f5c33a0744Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.15
linux linux_kernel 6.15
linux linux_kernel 6.15
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/host/xhci-ring.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "142273a49f2c315eabdbdf5a71c15e479b75ca91",
              "status": "affected",
              "version": "fbc0a0c7718a6cb1dc5e0811a4f88a2b1deedfa1",
              "versionType": "git"
            },
            {
              "lessThan": "bce3055b08e303e28a8751f6073066f5c33a0744",
              "status": "affected",
              "version": "9258c9ed32294ce3a4b58c9d92fc49ba030d35c9",
              "versionType": "git"
            },
            {
              "lessThan": "0624e29c595b05e7a0e6d1c368f0a05799928e30",
              "status": "affected",
              "version": "5e1c67abc9301d05130b7e267c204e7005503b33",
              "versionType": "git"
            },
            {
              "lessThan": "1ea050da5562af9b930d17cbbe9632d30f5df43a",
              "status": "affected",
              "version": "5e1c67abc9301d05130b7e267c204e7005503b33",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4725344ca645a98a9d8e45e25b01a2244de5b8aa",
              "versionType": "git"
            },
            {
              "lessThan": "6.6.89",
              "status": "affected",
              "version": "6.6.66",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.26",
              "status": "affected",
              "version": "6.12.2",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12",
              "status": "affected",
              "version": "6.11.11",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/host/xhci-ring.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.89",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.26",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6FDE6FA3-7A79-4C87-96F2-B09634A5DCE5",
              "versionEndExcluding": "6.6.89",
              "versionStartIncluding": "6.6.66",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4CBF5F6E-D446-4CAE-AAA4-413442319824",
              "versionEndExcluding": "6.12",
              "versionStartIncluding": "6.11.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "72659C84-F6D7-4B6C-8B36-B232E56EDB64",
              "versionEndExcluding": "6.12.26",
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "6.14.5",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "8D465631-2980-487A-8E65-40AE2B9F8ED1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "4C9D071F-B28E-46EC-AC61-22B913390211",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "13FC0DDE-E513-465E-9E81-515702D49B74",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: xhci: Fix invalid pointer dereference in Etron workaround\n\nThis check is performed before prepare_transfer() and prepare_ring(), so\nenqueue can already point at the final link TRB of a segment. And indeed\nit will, some 0.4% of times this code is called.\n\nThen enqueue + 1 is an invalid pointer. It will crash the kernel right\naway or load some junk which may look like a link TRB and cause the real\nlink TRB to be replaced with a NOOP. This wouldn\u0027t end well.\n\nUse a functionally equivalent test which doesn\u0027t dereference the pointer\nand always gives correct result.\n\nSomething has crashed my machine twice in recent days while playing with\nan Etron HC, and a control transfer stress test ran for confirmation has\njust crashed it again. The same test passes with this patch applied."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: xhci: Corregir desreferencia de puntero no v\u00e1lida en el workaround de Etron Esta comprobaci\u00f3n se realiza antes de prepare_transfer() y prepare_ring(), por lo que enqueue ya puede apuntar al TRB de enlace final de un segmento. Y de hecho lo har\u00e1, alrededor del 0,4% de las veces que se llama a este c\u00f3digo. Entonces enqueue + 1 es un puntero no v\u00e1lido. Har\u00e1 que el kernel se caiga de inmediato o cargar\u00e1 algo basura que puede parecer un TRB de enlace y hacer que el TRB de enlace real se reemplace con un NOOP. Esto no terminar\u00eda bien. Utilice una prueba funcionalmente equivalente que no desreferencia el puntero y siempre d\u00e9 un resultado correcto. Algo ha hecho que mi m\u00e1quina se caiga dos veces en los \u00faltimos d\u00edas mientras jugaba con un Etron HC, y una prueba de estr\u00e9s de transferencia de control ejecutada para confirmaci\u00f3n la acaba de hacer caer de nuevo. La misma prueba pasa con este parche aplicado."
    }
  ],
  "id": "CVE-2025-37813",
  "lastModified": "2026-10-15T22:18:18.577",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "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-2025-37813",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-15T21:45:20.958093Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-05-08T07:15:52.523",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/0624e29c595b05e7a0e6d1c368f0a05799928e30"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/142273a49f2c315eabdbdf5a71c15e479b75ca91"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/1ea050da5562af9b930d17cbbe9632d30f5df43a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
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      "url": "https://git.kernel.org/stable/c/bce3055b08e303e28a8751f6073066f5c33a0744"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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