CVE-2026-46293 (GCVE-0-2026-46293)
Vulnerability from cvelistv5
Published
2026-06-08 15:46
Modified
2026-06-14 18:07
Severity ?
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
Impacted products
Vendor Product Version
Linux Linux Version: d39fb172760e426e0628f16b785c85e16d17bd5e
Version: d39fb172760e426e0628f16b785c85e16d17bd5e
Version: d39fb172760e426e0628f16b785c85e16d17bd5e
Version: d39fb172760e426e0628f16b785c85e16d17bd5e
Version: d39fb172760e426e0628f16b785c85e16d17bd5e
Version: d39fb172760e426e0628f16b785c85e16d17bd5e
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "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": [
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          ]
        },
        {
          "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"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.175",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.140",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "7.1",
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                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-14T18:07:01.688Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9ed9b580a814773482c0a4f1be045636e68cc109"
        },
        {
          "url": "https://git.kernel.org/stable/c/47bc7a03449c39805bc2665d3e57c73195d5bcf8"
        },
        {
          "url": "https://git.kernel.org/stable/c/dbfcb09656cb30439577325c9dea2250203c2e3c"
        },
        {
          "url": "https://git.kernel.org/stable/c/a0780aeea166a7cf4706c45af4cadbb2a43a1fc9"
        },
        {
          "url": "https://git.kernel.org/stable/c/f24efd415455b98a1f1cfc6071fe6fde71986706"
        },
        {
          "url": "https://git.kernel.org/stable/c/2f7ae8ab6aa73daaf080d5332110357c29df9c36"
        }
      ],
      "title": "clk: microchip: mpfs-ccc: fix out of bounds access during output registration",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46293",
    "datePublished": "2026-06-08T15:46:20.288Z",
    "dateReserved": "2026-05-13T15:03:33.110Z",
    "dateUpdated": "2026-06-14T18:07:01.688Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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