CVE-2026-43328

HIGH

cpufreq: governor: fix double free in cpufreq_dbs_governor_init() error path

Title source: cna
STIX 2.1

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().

Scores

CVSS v3 7.8
EPSS 0.0001
EPSS Percentile 2.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-415
Status published
Products (21)
Linux/Linux < 5.2
Linux/Linux 4ebe36c94aed95de71a8ce6a6762226d31c938ee - 019ea28629720c220daedf38107c8787f330dc05
Linux/Linux 4ebe36c94aed95de71a8ce6a6762226d31c938ee - 3bf9d023d2329a0e5379f2fd09d06ef09729cd9d
Linux/Linux 4ebe36c94aed95de71a8ce6a6762226d31c938ee - 427d048e4f6acbfa01b5a8062449fe0ee8987c0d
Linux/Linux 4ebe36c94aed95de71a8ce6a6762226d31c938ee - 56bc91ee78babe9578585a2bc137abc4b3115ff3
Linux/Linux 4ebe36c94aed95de71a8ce6a6762226d31c938ee - 6dcf9d0064ce2f3e3dfe5755f98b93abe6a98e1e
Linux/Linux 4ebe36c94aed95de71a8ce6a6762226d31c938ee - d2703b4f8fb7cc6f0dfdb2dc2359cc46189e7357
Linux/Linux 4ebe36c94aed95de71a8ce6a6762226d31c938ee - da39ee627fd82b52068d4d5f115749a8b7d271f9
Linux/Linux 5.1.6 - 5.2
Linux/Linux 5.10.253 - 5.10.*
... and 11 more
Published May 08, 2026
Tracked Since May 08, 2026