Vulnerability-Lookup

GHSA-JM8J-3FG5-F3C9

Vulnerability from github – Published: 2026-05-08 15:31 – Updated: 2026-05-18 15:30

Details

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

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-43328"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-08T14:16:42Z",
    "severity": "HIGH"
  },
  "details": "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().",
  "id": "GHSA-jm8j-3fg5-f3c9",
  "modified": "2026-05-18T15:30:31Z",
  "published": "2026-05-08T15:31:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43328"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/019ea28629720c220daedf38107c8787f330dc05"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3bf9d023d2329a0e5379f2fd09d06ef09729cd9d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/427d048e4f6acbfa01b5a8062449fe0ee8987c0d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/56bc91ee78babe9578585a2bc137abc4b3115ff3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6dcf9d0064ce2f3e3dfe5755f98b93abe6a98e1e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d2703b4f8fb7cc6f0dfdb2dc2359cc46189e7357"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/da39ee627fd82b52068d4d5f115749a8b7d271f9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

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

Vulnerability from cvelistv5 – Published: 2026-05-08 13:31 – Updated: 2026-05-23 16:06

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

Linux

References

7 references

URL	Tags
https://git.kernel.org/stable/c/56bc91ee78babe957…
https://git.kernel.org/stable/c/019ea28629720c220…
https://git.kernel.org/stable/c/da39ee627fd82b520…
https://git.kernel.org/stable/c/427d048e4f6acbfa0…
https://git.kernel.org/stable/c/d2703b4f8fb7cc6f0…
https://git.kernel.org/stable/c/3bf9d023d2329a0e5…
https://git.kernel.org/stable/c/6dcf9d0064ce2f3e3…

Impacted products

2 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) Affected: 5.1.6 , < 5.2 (semver)
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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JSON

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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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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.10.253",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.168",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
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            {
              "lessThanOrEqual": "6.12.*",
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              "version": "6.18.22",
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            },
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              "status": "unaffected",
              "version": "6.19.12",
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              "versionType": "original_commit_for_fix"
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    "cveId": "CVE-2026-43328",
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    "dateReserved": "2026-05-01T14:12:56.002Z",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

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GHSA-JM8J-3FG5-F3C9

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

Tags

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Nomenclature