CVE-2026-43328 (GCVE-0-2026-43328)
Vulnerability from cvelistv5
Published
2026-05-08 13:31
Modified
2026-06-01 16:15
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: cpufreq: governor: fix double free in cpufreq_dbs_governor_init() error path When kobject_init_and_add() fails, cpufreq_dbs_governor_init() calls kobject_put(&dbs_data->attr_set.kobj). The kobject release callback cpufreq_dbs_data_release() calls gov->exit(dbs_data) and kfree(dbs_data), but the current error path then calls gov->exit(dbs_data) and kfree(dbs_data) again, causing a double free. Keep the direct kfree(dbs_data) for the gov->init() failure path, but after kobject_init_and_add() has been called, let kobject_put() handle the cleanup through cpufreq_dbs_data_release().
References
Impacted products
Vendor Product Version
Linux Linux Version: 4ebe36c94aed95de71a8ce6a6762226d31c938ee
Version: 4ebe36c94aed95de71a8ce6a6762226d31c938ee
Version: 4ebe36c94aed95de71a8ce6a6762226d31c938ee
Version: 4ebe36c94aed95de71a8ce6a6762226d31c938ee
Version: 4ebe36c94aed95de71a8ce6a6762226d31c938ee
Version: 4ebe36c94aed95de71a8ce6a6762226d31c938ee
Version: 4ebe36c94aed95de71a8ce6a6762226d31c938ee
Version: 4ebe36c94aed95de71a8ce6a6762226d31c938ee
Version: e977b1477a6725868302957e6b5c330220391797
Version: 5.1.6   ≤
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{
  "containers": {
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          "defaultStatus": "unaffected",
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          "programFiles": [
            "drivers/cpufreq/cpufreq_governor.c"
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          "programFiles": [
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              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
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            },
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              "status": "unaffected",
              "version": "6.1.168",
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              "version": "6.18.22",
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              "version": "7.0",
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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\ncpufreq: governor: fix double free in cpufreq_dbs_governor_init() error path\n\nWhen kobject_init_and_add() fails, cpufreq_dbs_governor_init() calls\nkobject_put(\u0026dbs_data-\u003eattr_set.kobj).\n\nThe kobject release callback cpufreq_dbs_data_release() calls\ngov-\u003eexit(dbs_data) and kfree(dbs_data), but the current error path\nthen calls gov-\u003eexit(dbs_data) and kfree(dbs_data) again, causing a\ndouble free.\n\nKeep the direct kfree(dbs_data) for the gov-\u003einit() failure path, but\nafter kobject_init_and_add() has been called, let kobject_put() handle\nthe cleanup through cpufreq_dbs_data_release()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-01T16:15:39.421Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/56bc91ee78babe9578585a2bc137abc4b3115ff3"
        },
        {
          "url": "https://git.kernel.org/stable/c/4b9118e93d2499bb2808ef3742fa0ce06f4f8117"
        },
        {
          "url": "https://git.kernel.org/stable/c/019ea28629720c220daedf38107c8787f330dc05"
        },
        {
          "url": "https://git.kernel.org/stable/c/da39ee627fd82b52068d4d5f115749a8b7d271f9"
        },
        {
          "url": "https://git.kernel.org/stable/c/427d048e4f6acbfa01b5a8062449fe0ee8987c0d"
        },
        {
          "url": "https://git.kernel.org/stable/c/d2703b4f8fb7cc6f0dfdb2dc2359cc46189e7357"
        },
        {
          "url": "https://git.kernel.org/stable/c/3bf9d023d2329a0e5379f2fd09d06ef09729cd9d"
        },
        {
          "url": "https://git.kernel.org/stable/c/6dcf9d0064ce2f3e3dfe5755f98b93abe6a98e1e"
        }
      ],
      "title": "cpufreq: governor: fix double free in cpufreq_dbs_governor_init() error path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43328",
    "datePublished": "2026-05-08T13:31:16.787Z",
    "dateReserved": "2026-05-01T14:12:56.002Z",
    "dateUpdated": "2026-06-01T16:15:39.421Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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