cpufreq: governor: fix double free in cpufreq_dbs_governor_init() error path
Summary
| CVE | CVE-2026-43328 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-08 14:16:42 UTC |
| Updated | 2026-05-12 14:10:27 UTC |
| Description | 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(). |
Risk And Classification
EPSS: 0.000240000 probability, percentile 0.070360000 (date 2026-05-12)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 4ebe36c94aed95de71a8ce6a6762226d31c938ee 56bc91ee78babe9578585a2bc137abc4b3115ff3 git | Not specified |
| CNA | Linux | Linux | affected 4ebe36c94aed95de71a8ce6a6762226d31c938ee 019ea28629720c220daedf38107c8787f330dc05 git | Not specified |
| CNA | Linux | Linux | affected 4ebe36c94aed95de71a8ce6a6762226d31c938ee da39ee627fd82b52068d4d5f115749a8b7d271f9 git | Not specified |
| CNA | Linux | Linux | affected 4ebe36c94aed95de71a8ce6a6762226d31c938ee 427d048e4f6acbfa01b5a8062449fe0ee8987c0d git | Not specified |
| CNA | Linux | Linux | affected 4ebe36c94aed95de71a8ce6a6762226d31c938ee d2703b4f8fb7cc6f0dfdb2dc2359cc46189e7357 git | Not specified |
| CNA | Linux | Linux | affected 4ebe36c94aed95de71a8ce6a6762226d31c938ee 3bf9d023d2329a0e5379f2fd09d06ef09729cd9d git | Not specified |
| CNA | Linux | Linux | affected 4ebe36c94aed95de71a8ce6a6762226d31c938ee 6dcf9d0064ce2f3e3dfe5755f98b93abe6a98e1e git | Not specified |
| CNA | Linux | Linux | affected e977b1477a6725868302957e6b5c330220391797 git | Not specified |
| CNA | Linux | Linux | affected 5.2 | Not specified |
| CNA | Linux | Linux | unaffected 5.2 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.253 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.168 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.134 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.81 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.22 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.19.12 6.19.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/427d048e4f6acbfa01b5a8062449fe0ee8987c0d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d2703b4f8fb7cc6f0dfdb2dc2359cc46189e7357 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/56bc91ee78babe9578585a2bc137abc4b3115ff3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/6dcf9d0064ce2f3e3dfe5755f98b93abe6a98e1e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/019ea28629720c220daedf38107c8787f330dc05 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/da39ee627fd82b52068d4d5f115749a8b7d271f9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/3bf9d023d2329a0e5379f2fd09d06ef09729cd9d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.