CVE-2026-43328 (GCVE-0-2026-43328)

Vulnerability from cvelistv5 – Published: 2026-05-08 13:31 – Updated: 2026-05-08 13:31
VLAI?
Title
cpufreq: governor: fix double free in cpufreq_dbs_governor_init() error path
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().
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 4ebe36c94aed95de71a8ce6a6762226d31c938ee , < 56bc91ee78babe9578585a2bc137abc4b3115ff3 (git)
Affected: 4ebe36c94aed95de71a8ce6a6762226d31c938ee , < 019ea28629720c220daedf38107c8787f330dc05 (git)
Affected: 4ebe36c94aed95de71a8ce6a6762226d31c938ee , < da39ee627fd82b52068d4d5f115749a8b7d271f9 (git)
Affected: 4ebe36c94aed95de71a8ce6a6762226d31c938ee , < 427d048e4f6acbfa01b5a8062449fe0ee8987c0d (git)
Affected: 4ebe36c94aed95de71a8ce6a6762226d31c938ee , < d2703b4f8fb7cc6f0dfdb2dc2359cc46189e7357 (git)
Affected: 4ebe36c94aed95de71a8ce6a6762226d31c938ee , < 3bf9d023d2329a0e5379f2fd09d06ef09729cd9d (git)
Affected: 4ebe36c94aed95de71a8ce6a6762226d31c938ee , < 6dcf9d0064ce2f3e3dfe5755f98b93abe6a98e1e (git)
Affected: e977b1477a6725868302957e6b5c330220391797 (git)
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    Linux Linux Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 6.1.168 , ≤ 6.1.* (semver)
Unaffected: 6.6.134 , ≤ 6.6.* (semver)
Unaffected: 6.12.81 , ≤ 6.12.* (semver)
Unaffected: 6.18.22 , ≤ 6.18.* (semver)
Unaffected: 6.19.12 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
            "drivers/cpufreq/cpufreq_governor.c"
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              "lessThanOrEqual": "6.1.*",
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      "descriptions": [
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          "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": "2026-05-08T13:31:16.787Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/56bc91ee78babe9578585a2bc137abc4b3115ff3"
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          "url": "https://git.kernel.org/stable/c/6dcf9d0064ce2f3e3dfe5755f98b93abe6a98e1e"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43328",
    "datePublished": "2026-05-08T13:31:16.787Z",
    "dateReserved": "2026-05-01T14:12:56.002Z",
    "dateUpdated": "2026-05-08T13:31:16.787Z",
    "state": "PUBLISHED"
  },
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      "date": "2026-05-09",
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      "percentile": "0.07036"
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  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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