CVE-2026-43328
Published: May 8, 2026
Modified: Jun 1, 2026
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().
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected 4ebe36c94aed95de71a8ce6a6762226d31c938ee - < 56bc91ee78babe9578585a2bc137abc4b3115ff3affected 4ebe36c94aed95de71a8ce6a6762226d31c938ee - < 4b9118e93d2499bb2808ef3742fa0ce06f4f8117affected 4ebe36c94aed95de71a8ce6a6762226d31c938ee - < 019ea28629720c220daedf38107c8787f330dc05affected 4ebe36c94aed95de71a8ce6a6762226d31c938ee - < da39ee627fd82b52068d4d5f115749a8b7d271f9affected 4ebe36c94aed95de71a8ce6a6762226d31c938ee - < 427d048e4f6acbfa01b5a8062449fe0ee8987c0d+5 more versions |
Linux | Linux | affected 5.2unaffected 0 - < 5.2unaffected 5.10.253 - <= 5.10.*unaffected 5.15.209 - <= 5.15.*unaffected 6.1.168 - <= 6.1.*+5 more versions |
References
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