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clk: microchip: mpfs-ccc: fix out of bounds access during output registration

Type: advisorySources: OSV

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.

Products
Kernel
Affected versions
Not specified
Fixed versions
6.1.175, 6.12.88, 6.18.30, 6.6.140, 7.0.7
CVEs
CVE-2026-46293
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 00:16 UTC · Revision 1

Source evidence

clk: microchip: mpfs-ccc: fix out of bounds access during output registration

core-osv · Original source

Published 8 Jun 2026, 15:46 UTC

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.

osv:CVE-2026-46293

Kernel

Fixed versions: 6.1.175, 6.6.140, 6.12.88, 6.18.30, 7.0.7

Complete source record
{
  "id": "4b09500fd49895516140338e8695369e11fef03ea6cba881126f93910d9a964a",
  "url": "https://osv.dev/vulnerability/CVE-2026-46293",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "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.",
    "evidence": "osv:CVE-2026-46293",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.175",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.140",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.88",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.30",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.0.7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-46293",
      "aliases": [
        "CVE-2026-46293"
      ],
      "affected": [
        {
          "ranges": [
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "fixed": "9ed9b580a814773482c0a4f1be045636e68cc109"
                },
                {
                  "fixed": "47bc7a03449c39805bc2665d3e57c73195d5bcf8"
                },
                {
                  "fixed": "dbfcb09656cb30439577325c9dea2250203c2e3c"
                },
                {
                  "fixed": "a0780aeea166a7cf4706c45af4cadbb2a43a1fc9"
                },
                {
                  "fixed": "f24efd415455b98a1f1cfc6071fe6fde71986706"
                },
                {
                  "fixed": "2f7ae8ab6aa73daaf080d5332110357c29df9c36"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46293.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.1.0"
                },
                {
                  "fixed": "6.1.175"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.140"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.88"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.30"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.0.7"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46293.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.335094127Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/2f7ae8ab6aa73daaf080d5332110357c29df9c36",
        "https://git.kernel.org/stable/c/47bc7a03449c39805bc2665d3e57c73195d5bcf8",
        "https://git.kernel.org/stable/c/9ed9b580a814773482c0a4f1be045636e68cc109",
        "https://git.kernel.org/stable/c/a0780aeea166a7cf4706c45af4cadbb2a43a1fc9",
        "https://git.kernel.org/stable/c/dbfcb09656cb30439577325c9dea2250203c2e3c",
        "https://git.kernel.org/stable/c/f24efd415455b98a1f1cfc6071fe6fde71986706",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46293.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-46293",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46293.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-46293",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 499322,
  "published_at": "2026-06-08T15:46:20.288+00:00"
}