CVE-2026-89982 (GCVE-0-2026-89982)
Vulnerability from cvelistv5
Published
2026-09-16 10:32
Modified
2026-10-19 08:55
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: i2c: mux: Fix channel node leak on adapter add failure i2c_mux_add_adapter() takes a reference to the Device Tree channel node before registering the new adapter. If adapter registration fails, the error path frees the private data without dropping that reference. Release the channel node before freeing the private data.
References
Impacted products
Vendor Product Version
Linux Linux Version: bc45449b1444611d68466ae7f45f235420d79019
Version: bc45449b1444611d68466ae7f45f235420d79019
Version: bc45449b1444611d68466ae7f45f235420d79019
Version: bc45449b1444611d68466ae7f45f235420d79019
Version: bc45449b1444611d68466ae7f45f235420d79019
Version: bc45449b1444611d68466ae7f45f235420d79019
Version: bc45449b1444611d68466ae7f45f235420d79019
Version: bc45449b1444611d68466ae7f45f235420d79019
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/i2c/i2c-mux.c"
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          "vendor": "Linux",
          "versions": [
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              "version": "3.5"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
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            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
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            {
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              "status": "unaffected",
              "version": "6.18.51",
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              "version": "7.2.5",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: mux: Fix channel node leak on adapter add failure\n\ni2c_mux_add_adapter() takes a reference to the Device Tree channel node\nbefore registering the new adapter. If adapter registration fails, the\nerror path frees the private data without dropping that reference.\n\nRelease the channel node before freeing the private data."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:55:56.803Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4f42f70afd2447f3c82ca69d1e03466a75348ba9"
        },
        {
          "url": "https://git.kernel.org/stable/c/4c9bc46a2a4afb7a11c48d33bdf19febab431015"
        },
        {
          "url": "https://git.kernel.org/stable/c/dd2c1e6747b17b24ecddd48a7bb6bb964c2793d1"
        },
        {
          "url": "https://git.kernel.org/stable/c/0927153f2abf48b6cc3e5f27063a17f7a8d47f38"
        },
        {
          "url": "https://git.kernel.org/stable/c/b580f062b24c4eef562f08f210c028adb34ef14e"
        },
        {
          "url": "https://git.kernel.org/stable/c/2b3b06cb709c4bf75a3fe3da3a0ca368ee3b40e5"
        },
        {
          "url": "https://git.kernel.org/stable/c/694e7e6edf249723ca7d3ef77c2ca1badfc78dc4"
        },
        {
          "url": "https://git.kernel.org/stable/c/385c7af4e3b95d0769fd211831674e83b16a2ebf"
        }
      ],
      "title": "i2c: mux: Fix channel node leak on adapter add failure",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89982",
    "datePublished": "2026-09-16T10:32:58.747Z",
    "dateReserved": "2026-09-11T19:38:34.779Z",
    "dateUpdated": "2026-10-19T08:55:56.803Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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