CVE-2026-43328cpufreq: governor: fix double free in cpufreq_dbs_governor_init() error path
Updated under an hour ago ()
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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().
- CVSS
- 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Jun 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 4ebe36c94aed95de71a8ce6a6762226d31c938ee before 56bc91ee78babe9578585a2bc137abc4b3115ff3; 4ebe36c94aed95de71a8ce6a6762226d31c938ee builds before 4b9118e93d2499bb2808ef3742fa0ce06f4f8117; from 4ebe36c94aed95de71a8ce6a6762226d31c938ee before 019ea28629720c220daedf38107c8787f330dc05; from 4ebe36c94aed95de71a8ce6a6762226d31c938ee before da39ee627fd82b52068d4d5f115749a8b7d271f9; from 4ebe36c94aed95de71a8ce6a6762226d31c938ee before 427d048e4f6acbfa01b5a8062449fe0ee8987c0d; from 4ebe36c94aed95de71a8ce6a6762226d31c938ee before d2703b4f8fb7cc6f0dfdb2dc2359cc46189e7357; 4ebe36c94aed95de71a8ce6a6762226d31c938ee builds before 3bf9d023d2329a0e5379f2fd09d06ef09729cd9d; from 4ebe36c94aed95de71a8ce6a6762226d31c938ee before 6dcf9d0064ce2f3e3dfe5755f98b93abe6a98e1e; and 2 more ranges | CNA record |
linux linux_kernel linux:linux_kernel | from 5.2 before 5.10.253; from 5.11 before 6.1.168; from 6.2 before 6.6.134; from 6.7 before 6.12.81; from 6.13 before 6.18.22; from 6.19 before 6.19.12; 5.1.6; 7.0; and 5 more ranges | NVD |
References
- https://git.kernel.org/stable/c/56bc91ee78babe9578585a2bc137abc4b3115ff3patch
- https://git.kernel.org/stable/c/4b9118e93d2499bb2808ef3742fa0ce06f4f8117
- https://git.kernel.org/stable/c/019ea28629720c220daedf38107c8787f330dc05patch
- https://git.kernel.org/stable/c/da39ee627fd82b52068d4d5f115749a8b7d271f9patch
- https://git.kernel.org/stable/c/427d048e4f6acbfa01b5a8062449fe0ee8987c0dpatch
- https://git.kernel.org/stable/c/d2703b4f8fb7cc6f0dfdb2dc2359cc46189e7357patch
- https://git.kernel.org/stable/c/3bf9d023d2329a0e5379f2fd09d06ef09729cd9dpatch
- https://git.kernel.org/stable/c/6dcf9d0064ce2f3e3dfe5755f98b93abe6a98e1epatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.