FKIE_CVE-2025-38568

Vulnerability from fkie_nvd - Published: 2025-08-19 17:15 - Updated: 2026-07-30 06:23
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: net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing TCA_MQPRIO_TC_ENTRY_INDEX is validated using NLA_POLICY_MAX(NLA_U32, TC_QOPT_MAX_QUEUE), which allows the value TC_QOPT_MAX_QUEUE (16). This leads to a 4-byte out-of-bounds stack write in the fp[] array, which only has room for 16 elements (0–15). Fix this by changing the policy to allow only up to TC_QOPT_MAX_QUEUE - 1.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/39491e859fd494d0b51adc5c7d54c8a7dcf1d198Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/66fc2ebdd9d5dd6e5a9c7edeace5a61a0ab2cd86Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d00e4125680f7074c4f42ce3c297336f23128e70Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f1a9dbcb7d17bf0abb325cdc984957cfabc59693Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ffd2dc4c6c49ff4f1e5d34e454a6a55608104c17Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/sched/sch_mqprio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "39491e859fd494d0b51adc5c7d54c8a7dcf1d198",
              "status": "affected",
              "version": "f62af20bed2d9e824f51cfc97ff01bc261f40e58",
              "versionType": "git"
            },
            {
              "lessThan": "d00e4125680f7074c4f42ce3c297336f23128e70",
              "status": "affected",
              "version": "f62af20bed2d9e824f51cfc97ff01bc261f40e58",
              "versionType": "git"
            },
            {
              "lessThan": "66fc2ebdd9d5dd6e5a9c7edeace5a61a0ab2cd86",
              "status": "affected",
              "version": "f62af20bed2d9e824f51cfc97ff01bc261f40e58",
              "versionType": "git"
            },
            {
              "lessThan": "f1a9dbcb7d17bf0abb325cdc984957cfabc59693",
              "status": "affected",
              "version": "f62af20bed2d9e824f51cfc97ff01bc261f40e58",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "f62af20bed2d9e824f51cfc97ff01bc261f40e58",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/sched/sch_mqprio.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": "6.6.102",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.1",
              "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": "5BCA0ECA-F7A2-42B6-A438-0891D46073AD",
              "versionEndExcluding": "6.6.102",
              "versionStartIncluding": "6.4",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "EA7AA5E6-4376-4A85-A021-6ACC5FF801C3",
              "versionEndExcluding": "6.12.42",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5890C690-B295-40C2-9121-FF5F987E5142",
              "versionEndExcluding": "6.15.10",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "58182352-D7DF-4CC9-841E-03C1D852C3FB",
              "versionEndExcluding": "6.16.1",
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              "vulnerable": true
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          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: mqprio: fix stack out-of-bounds write in tc entry parsing\n\nTCA_MQPRIO_TC_ENTRY_INDEX is validated using\nNLA_POLICY_MAX(NLA_U32, TC_QOPT_MAX_QUEUE), which allows the value\nTC_QOPT_MAX_QUEUE (16). This leads to a 4-byte out-of-bounds stack\nwrite in the fp[] array, which only has room for 16 elements (0\u201315).\n\nFix this by changing the policy to allow only up to TC_QOPT_MAX_QUEUE - 1."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/sched: mqprio: se corrige una escritura fuera de los l\u00edmites en la pila durante el an\u00e1lisis de la entrada tc. TCA_MQPRIO_TC_ENTRY_INDEX se valida mediante NLA_POLICY_MAX(NLA_U32, TC_QOPT_MAX_QUEUE), que permite el valor TC_QOPT_MAX_QUEUE (16). Esto provoca una escritura fuera de los l\u00edmites de 4 bytes en la matriz fp[], que solo admite 16 elementos (0-15). Para solucionar esto, modifique la pol\u00edtica para permitir solo hasta TC_QOPT_MAX_QUEUE - 1."
    }
  ],
  "id": "CVE-2025-38568",
  "lastModified": "2026-07-30T06:23:26.750",
  "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-2025-38568",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-10T20:41:51.423653Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-08-19T17:15:33.523",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/39491e859fd494d0b51adc5c7d54c8a7dcf1d198"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    },
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      "tags": [
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
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      "tags": [
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    }
  ],
  "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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