EUVD-2026-28612
GHSA-jm8j-3fg5-f3c9
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionNVD
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().
AnalysisAI
Double-free condition in the Linux kernel's cpufreq governor subsystem affects multiple stable branches and can lead to memory corruption when an error path in cpufreq_dbs_governor_init() is triggered. The flaw stems from redundant cleanup logic that calls gov->exit() and kfree(dbs_data) twice after a kobject_init_and_add() failure, and no public exploit identified at time of analysis. …
Sign in for full analysis, threat intelligence, and remediation guidance.
RemediationAI
24 hours: Inventory Linux systems running vulnerable cpufreq code and assess exposure in privilege-escalation-sensitive environments. 7 days: Apply Linux kernel patches from your distributions (Red Hat, Canonical, etc.) addressing CVE-2026-43328; prioritize servers and multi-tenant systems. …
Sign in for detailed remediation steps.
More from same product – last 7 days
Command injection in the shell-quote npm package allows attackers who can influence object-token inputs to inject arbitr
Heap buffer overflow in NGINX Plus and NGINX Open Source ngx_http_rewrite_module allows unauthenticated remote attackers
Kernel availability loss in Ubuntu Linux 6.8, 6.17, and 7.0 can be triggered by any unprivileged local user via a defect
Kernel panic via NULL pointer dereference in Ubuntu Linux 6.8's AppArmor notification handler allows a locally authentic
NULL pointer dereference in Ubuntu Linux kernel versions 6.8, 6.17, and 7.0 allows a local unprivileged user to crash th
Vendor StatusVendor
Share
External POC / Exploit Code
Leaving vuln.today