CVE-2026-43328
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().
How to fix
- linux linux_kernel5.10.253, 6.1.168, 6.6.134, 6.12.81, 6.18.22, 6.19.12 or later
- git.kernel.org/stable/c/019ea28629720c220daedf38107c8787f330dc05
- git.kernel.org/stable/c/3bf9d023d2329a0e5379f2fd09d06ef09729cd9d
- git.kernel.org/stable/c/427d048e4f6acbfa01b5a8062449fe0ee8987c0d
- git.kernel.org/stable/c/56bc91ee78babe9578585a2bc137abc4b3115ff3
- git.kernel.org/stable/c/6dcf9d0064ce2f3e3dfe5755f98b93abe6a98e1e
- git.kernel.org/stable/c/d2703b4f8fb7cc6f0dfdb2dc2359cc46189e7357
- git.kernel.org/stable/c/da39ee627fd82b52068d4d5f115749a8b7d271f9
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.2 ≤ v < 5.10.253, 5.11 ≤ v < 6.1.168, 6.2 ≤ v < 6.6.134, 6.7 ≤ v < 6.12.81, 6.13 ≤ v < 6.18.22, 6.19 ≤ v < 6.19.12, 5.1.6, 7.0 | 5.10.253, 6.1.168, 6.6.134, 6.12.81, 6.18.22, 6.19.12 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.