CVE-2026-98676 (GCVE-0-2026-98676)
Vulnerability from cvelistv5
Published
2026-10-18 15:45
Modified
2026-10-19 09:23
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: iio: adc: ade9000: fix NULL pointer dereference in clkout registration ade9000_setup_clkout() passes NULL as the register address when registering a divider clock. During clock registration, the common clock framework calls clk_divider_recalc_rate(), which dereferences the address through readl(). As a result, probing an ADE9000 configured as a clock provider with an external input clock crashes. CLKOUT passes CLKIN through without changing its rate. Register it as a 1:1 fixed-factor clock, which does not require register access. This change does not affect the configuration using the internal clock, for which the driver does not register a clock provider.
References
Impacted products
Vendor Product Version
Linux Linux Version: 81de7b4619fc3682a3bedaa7e8d6b2d67ab4e10a
Version: 81de7b4619fc3682a3bedaa7e8d6b2d67ab4e10a
Version: 81de7b4619fc3682a3bedaa7e8d6b2d67ab4e10a
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iio/adc/ade9000.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d2400175228fbc10b29c49a7b5f70a7e80d144dd",
              "status": "affected",
              "version": "81de7b4619fc3682a3bedaa7e8d6b2d67ab4e10a",
              "versionType": "git"
            },
            {
              "lessThan": "134aa31a8d4e71f6ab1d155ad7b4502508832f72",
              "status": "affected",
              "version": "81de7b4619fc3682a3bedaa7e8d6b2d67ab4e10a",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/iio/adc/ade9000.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.56",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.10",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: ade9000: fix NULL pointer dereference in clkout registration\n\nade9000_setup_clkout() passes NULL as the register address when\nregistering a divider clock. During clock registration, the common\nclock framework calls clk_divider_recalc_rate(), which dereferences\nthe address through readl(). As a result, probing an ADE9000 configured\nas a clock provider with an external input clock crashes.\n\nCLKOUT passes CLKIN through without changing its rate. Register it as\na 1:1 fixed-factor clock, which does not require register access.\n\nThis change does not affect the configuration using the internal clock,\nfor which the driver does not register a clock provider."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:23:45.848Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d2400175228fbc10b29c49a7b5f70a7e80d144dd"
        },
        {
          "url": "https://git.kernel.org/stable/c/134aa31a8d4e71f6ab1d155ad7b4502508832f72"
        },
        {
          "url": "https://git.kernel.org/stable/c/49ee1c6a3ebda6b7de06b2961b0e09c1c3fe536a"
        }
      ],
      "title": "iio: adc: ade9000: fix NULL pointer dereference in clkout registration",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98676",
    "datePublished": "2026-10-18T15:45:31.286Z",
    "dateReserved": "2026-09-25T10:25:14.363Z",
    "dateUpdated": "2026-10-19T09:23:45.848Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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