FKIE_CVE-2025-38730

Vulnerability from fkie_nvd - Published: 2025-09-04 16:15 - Updated: 2026-10-19 21:10
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: io_uring/net: commit partial buffers on retry Ring provided buffers are potentially only valid within the single execution context in which they were acquired. io_uring deals with this and invalidates them on retry. But on the networking side, if MSG_WAITALL is set, or if the socket is of the streaming type and too little was processed, then it will hang on to the buffer rather than recycle or commit it. This is problematic for two reasons: 1) If someone unregisters the provided buffer ring before a later retry, then the req->buf_list will no longer be valid. 2) If multiple sockers are using the same buffer group, then multiple receives can consume the same memory. This can cause data corruption in the application, as either receive could land in the same userspace buffer. Fix this by disallowing partial retries from pinning a provided buffer across multiple executions, if ring provided buffers are used.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/21a4ddb0f5e933f372808c10b9ac704505751bb1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2eb7937b5fc7fcd90eab7bebb0181214b61b9283Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3b53dc1c641f2884d4750fc25aaf6c36b90db606Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/41b70df5b38bc80967d2e0ed55cc3c3896bba781Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fe9da1812f8697a38f7e30991d568ec199e16059Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.17
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "io_uring/net.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3b53dc1c641f2884d4750fc25aaf6c36b90db606",
              "status": "affected",
              "version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
              "versionType": "git"
            },
            {
              "lessThan": "fe9da1812f8697a38f7e30991d568ec199e16059",
              "status": "affected",
              "version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
              "versionType": "git"
            },
            {
              "lessThan": "21a4ddb0f5e933f372808c10b9ac704505751bb1",
              "status": "affected",
              "version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
              "versionType": "git"
            },
            {
              "lessThan": "2eb7937b5fc7fcd90eab7bebb0181214b61b9283",
              "status": "affected",
              "version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
              "versionType": "git"
            },
            {
              "lessThan": "41b70df5b38bc80967d2e0ed55cc3c3896bba781",
              "status": "affected",
              "version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "io_uring/net.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.103",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F76E2E5C-65FA-4B99-BD18-DDA394CA195B",
              "versionEndExcluding": "6.6.103",
              "versionStartIncluding": "6.4",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "12351F24-1133-4775-960C-F2B47E81298B",
              "versionEndExcluding": "6.12.44",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BC242347-F722-43AE-B910-BE0B22386977",
              "versionEndExcluding": "6.15.11",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BD7C087D-2415-4521-B624-30003352F899",
              "versionEndExcluding": "6.16.2",
              "versionStartIncluding": "6.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "327D22EF-390B-454C-BD31-2ED23C998A1C",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/net: commit partial buffers on retry\n\nRing provided buffers are potentially only valid within the single\nexecution context in which they were acquired. io_uring deals with this\nand invalidates them on retry. But on the networking side, if\nMSG_WAITALL is set, or if the socket is of the streaming type and too\nlittle was processed, then it will hang on to the buffer rather than\nrecycle or commit it. This is problematic for two reasons:\n\n1) If someone unregisters the provided buffer ring before a later retry,\n   then the req-\u003ebuf_list will no longer be valid.\n\n2) If multiple sockers are using the same buffer group, then multiple\n   receives can consume the same memory. This can cause data corruption\n   in the application, as either receive could land in the same\n   userspace buffer.\n\nFix this by disallowing partial retries from pinning a provided buffer\nacross multiple executions, if ring provided buffers are used."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nio_uring/net: confirmar b\u00faferes parciales al reintentar\n\nLos b\u00faferes proporcionados por el anillo son potencialmente v\u00e1lidos solo dentro del \u00fanico contexto de ejecuci\u00f3n en el que fueron adquiridos. io_uring maneja esto y los invalida al reintentar. Pero en el lado de la red, si MSG_WAITALL est\u00e1 configurado, o si el socket es de tipo streaming y se proces\u00f3 muy poco, entonces se aferrar\u00e1 al b\u00fafer en lugar de reciclarlo o confirmarlo. Esto es problem\u00e1tico por dos razones:\n\n1) Si alguien anula el registro del anillo de b\u00faferes proporcionado antes de un reintento posterior, entonces req-\u003ebuf_list ya no ser\u00e1 v\u00e1lido.\n\n2) Si m\u00faltiples sockets est\u00e1n usando el mismo grupo de b\u00faferes, entonces m\u00faltiples recepciones pueden consumir la misma memoria. Esto puede causar corrupci\u00f3n de datos en la aplicaci\u00f3n, ya que cualquiera de las recepciones podr\u00eda terminar en el mismo b\u00fafer de espacio de usuario.\n\nSolucione esto impidiendo que los reintentos parciales fijen un b\u00fafer proporcionado a trav\u00e9s de m\u00faltiples ejecuciones, si se utilizan b\u00faferes proporcionados por el anillo."
    }
  ],
  "id": "CVE-2025-38730",
  "lastModified": "2026-10-19T21:10:00.160",
  "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": 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"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-38730",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-15T21:52:58.598362Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-09-04T16:15:43.167",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/21a4ddb0f5e933f372808c10b9ac704505751bb1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2eb7937b5fc7fcd90eab7bebb0181214b61b9283"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3b53dc1c641f2884d4750fc25aaf6c36b90db606"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/41b70df5b38bc80967d2e0ed55cc3c3896bba781"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/fe9da1812f8697a38f7e30991d568ec199e16059"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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