CVE-2026-43175 (GCVE-0-2026-43175)
Vulnerability from cvelistv5
Published
2026-05-06 11:27
Modified
2026-05-11 22:19
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: clk: rs9: Reserve 8 struct clk_hw slots for for 9FGV0841 The 9FGV0841 has 8 outputs and registers 8 struct clk_hw, make sure there are 8 slots for those newly registered clk_hw pointers, else there is going to be out of bounds write when pointers 4..7 are set into struct rs9_driver_data .clk_dif[4..7] field. Since there are other structure members past this struct clk_hw pointer array, writing to .clk_dif[4..7] fields corrupts both the struct rs9_driver_data content and data around it, sometimes without crashing the kernel. However, the kernel does surely crash when the driver is unbound or during suspend. Fix this, increase the struct clk_hw pointer array size to the maximum output count of 9FGV0841, which is the biggest chip that is supported by this driver.
References
Impacted products
Vendor Product Version
Linux Linux Version: f0e5e1800204b82af6d3e8ef03012ab4afc22358
Version: f0e5e1800204b82af6d3e8ef03012ab4afc22358
Version: f0e5e1800204b82af6d3e8ef03012ab4afc22358
Version: f0e5e1800204b82af6d3e8ef03012ab4afc22358
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/clk/clk-renesas-pcie.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "2f926875dffe2226ea26d129e16d9092cccd03aa",
              "status": "affected",
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            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/clk/clk-renesas-pcie.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "lessThan": "6.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.16",
              "versionType": "semver"
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              "version": "6.19.6",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.75",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.16",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.19.6",
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                  "vulnerable": true
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: rs9: Reserve 8 struct clk_hw slots for for 9FGV0841\n\nThe 9FGV0841 has 8 outputs and registers 8 struct clk_hw, make sure\nthere are 8 slots for those newly registered clk_hw pointers, else\nthere is going to be out of bounds write when pointers 4..7 are set\ninto struct rs9_driver_data .clk_dif[4..7] field.\n\nSince there are other structure members past this struct clk_hw\npointer array, writing to .clk_dif[4..7] fields corrupts both\nthe struct rs9_driver_data content and data around it, sometimes\nwithout crashing the kernel. However, the kernel does surely\ncrash when the driver is unbound or during suspend.\n\nFix this, increase the struct clk_hw pointer array size to the\nmaximum output count of 9FGV0841, which is the biggest chip that\nis supported by this driver."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:19:14.361Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2f926875dffe2226ea26d129e16d9092cccd03aa"
        },
        {
          "url": "https://git.kernel.org/stable/c/da86ca15d7389ee0b5df08e8f70c39354e6b8a4b"
        },
        {
          "url": "https://git.kernel.org/stable/c/82a34f344999d8029bcebf131028fa519140c7cc"
        },
        {
          "url": "https://git.kernel.org/stable/c/5ec820fc28d0b8a0f3890d476b1976f20e8343cc"
        }
      ],
      "title": "clk: rs9: Reserve 8 struct clk_hw slots for for 9FGV0841",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43175",
    "datePublished": "2026-05-06T11:27:49.496Z",
    "dateReserved": "2026-05-01T14:12:55.991Z",
    "dateUpdated": "2026-05-11T22:19:14.361Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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