FKIE_CVE-2026-46293

Vulnerability from fkie_nvd - Published: 2026-06-08 17:16 - Updated: 2026-07-23 08:10
Severity
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: clk: microchip: mpfs-ccc: fix out of bounds access during output registration UBSAN reported an out of bounds access during registration of the last two outputs. This out of bounds access occurs because space is only allocated in the hws array for two PLLs and the four output dividers that each has, but the defined IDs contain two DLLS and their two outputs each, which are not supported by the driver. The ID order is PLLs -> DLLs -> PLL outputs -> DLL outputs. Decrement the PLL output IDs by two while adding them to the array to avoid the problem.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2f7ae8ab6aa73daaf080d5332110357c29df9c36Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/47bc7a03449c39805bc2665d3e57c73195d5bcf8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9ed9b580a814773482c0a4f1be045636e68cc109Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a0780aeea166a7cf4706c45af4cadbb2a43a1fc9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dbfcb09656cb30439577325c9dea2250203c2e3cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f24efd415455b98a1f1cfc6071fe6fde71986706Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/clk/microchip/clk-mpfs-ccc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9ed9b580a814773482c0a4f1be045636e68cc109",
              "status": "affected",
              "version": "d39fb172760e426e0628f16b785c85e16d17bd5e",
              "versionType": "git"
            },
            {
              "lessThan": "47bc7a03449c39805bc2665d3e57c73195d5bcf8",
              "status": "affected",
              "version": "d39fb172760e426e0628f16b785c85e16d17bd5e",
              "versionType": "git"
            },
            {
              "lessThan": "dbfcb09656cb30439577325c9dea2250203c2e3c",
              "status": "affected",
              "version": "d39fb172760e426e0628f16b785c85e16d17bd5e",
              "versionType": "git"
            },
            {
              "lessThan": "a0780aeea166a7cf4706c45af4cadbb2a43a1fc9",
              "status": "affected",
              "version": "d39fb172760e426e0628f16b785c85e16d17bd5e",
              "versionType": "git"
            },
            {
              "lessThan": "f24efd415455b98a1f1cfc6071fe6fde71986706",
              "status": "affected",
              "version": "d39fb172760e426e0628f16b785c85e16d17bd5e",
              "versionType": "git"
            },
            {
              "lessThan": "2f7ae8ab6aa73daaf080d5332110357c29df9c36",
              "status": "affected",
              "version": "d39fb172760e426e0628f16b785c85e16d17bd5e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/clk/microchip/clk-mpfs-ccc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.1"
            },
            {
              "lessThan": "6.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.88",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.30",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A4CF44D2-E504-42EA-A313-4974CFE03BAA",
              "versionEndExcluding": "6.1.175",
              "versionStartIncluding": "6.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A1A92866-F406-43B5-B2D1-CFC274753E9D",
              "versionEndExcluding": "6.6.140",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5AFBE0EC-CCDF-4207-AE92-ABF958125CA4",
              "versionEndExcluding": "6.12.88",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BF39AE08-AE6D-4410-8FBE-76F6BF5BF55B",
              "versionEndExcluding": "6.18.30",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D0893CA7-9AE6-4DFE-AC75-48967D73AD8E",
              "versionEndExcluding": "7.0.7",
              "versionStartIncluding": "6.19",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: microchip: mpfs-ccc: fix out of bounds access during output registration\n\nUBSAN reported an out of bounds access during registration of the last\ntwo outputs. This out of bounds access occurs because space is only\nallocated in the hws array for two PLLs and the four output dividers\nthat each has, but the defined IDs contain two DLLS and their two\noutputs each, which are not supported by the driver. The ID order is\nPLLs -\u003e DLLs -\u003e PLL outputs -\u003e DLL outputs. Decrement the PLL output IDs\nby two while adding them to the array to avoid the problem."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nclk: microchip: mpfs-ccc: corregir el acceso fuera de l\u00edmites durante el registro de salida\n\nUBSAN inform\u00f3 un acceso fuera de l\u00edmites durante el registro de las dos \u00faltimas salidas. Este acceso fuera de l\u00edmites ocurre porque solo se asigna espacio en el array hws para dos PLLs y los cuatro divisores de salida que cada uno tiene, pero los IDs definidos contienen dos DLLS y sus dos salidas cada uno, que no son soportados por el controlador. El orden de los IDs es PLLs -\u003e DLLs -\u003e salidas de PLL -\u003e salidas de DLL. Decrementar los IDs de salida de PLL en dos mientras se a\u00f1aden al array para evitar el problema."
    }
  ],
  "id": "CVE-2026-46293",
  "lastModified": "2026-07-23T08:10:00.137",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-06-08T17:16:47.630",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2f7ae8ab6aa73daaf080d5332110357c29df9c36"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/47bc7a03449c39805bc2665d3e57c73195d5bcf8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/9ed9b580a814773482c0a4f1be045636e68cc109"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a0780aeea166a7cf4706c45af4cadbb2a43a1fc9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/dbfcb09656cb30439577325c9dea2250203c2e3c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/f24efd415455b98a1f1cfc6071fe6fde71986706"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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