CVE-2026-46293 (GCVE-0-2026-46293)

Vulnerability from cvelistv5 – Published: 2026-06-08 15:46 – Updated: 2026-06-14 18:07
VLAI
Title
clk: microchip: mpfs-ccc: fix out of bounds access during output registration
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d39fb172760e426e0628f16b785c85e16d17bd5e , < 9ed9b580a814773482c0a4f1be045636e68cc109 (git)
Affected: d39fb172760e426e0628f16b785c85e16d17bd5e , < 47bc7a03449c39805bc2665d3e57c73195d5bcf8 (git)
Affected: d39fb172760e426e0628f16b785c85e16d17bd5e , < dbfcb09656cb30439577325c9dea2250203c2e3c (git)
Affected: d39fb172760e426e0628f16b785c85e16d17bd5e , < a0780aeea166a7cf4706c45af4cadbb2a43a1fc9 (git)
Affected: d39fb172760e426e0628f16b785c85e16d17bd5e , < f24efd415455b98a1f1cfc6071fe6fde71986706 (git)
Affected: d39fb172760e426e0628f16b785c85e16d17bd5e , < 2f7ae8ab6aa73daaf080d5332110357c29df9c36 (git)
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Linux Linux Affected: 6.1
Unaffected: 0 , < 6.1 (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.140 , ≤ 6.6.* (semver)
Unaffected: 6.12.88 , ≤ 6.12.* (semver)
Unaffected: 6.18.30 , ≤ 6.18.* (semver)
Unaffected: 7.0.7 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/clk/microchip/clk-mpfs-ccc.c"
          ],
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          ],
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          "vendor": "Linux",
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              "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": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "operator": "OR"
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      "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": [
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          "url": "https://git.kernel.org/stable/c/9ed9b580a814773482c0a4f1be045636e68cc109"
        },
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        },
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          "url": "https://git.kernel.org/stable/c/dbfcb09656cb30439577325c9dea2250203c2e3c"
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        },
        {
          "url": "https://git.kernel.org/stable/c/2f7ae8ab6aa73daaf080d5332110357c29df9c36"
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      ],
      "title": "clk: microchip: mpfs-ccc: fix out of bounds access during output registration",
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  "cveMetadata": {
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    "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"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-46293",
      "date": "2026-06-19",
      "epss": "0.00172",
      "percentile": "0.06835"
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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