CVE-2025-38259 ASoC: codecs: wcd9335: Fix missing free of regulator supplies
A missing regulator cleanup in the wcd9335 codec driver causes memory leaks and unbalanced reference counts, potentially leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-38259?
CVE-2025-38259 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 9 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
ASoC: codecs: wcd9335: Fix missing free of regulator supplies
Driver gets and enables all regulator supplies in probe path (wcd9335_parse_dt() and wcd9335_power_on_reset()), but does not cleanup in final error paths and in unbind (missing remove() callback). This leads to leaked memory and unbalanced regulator enable count during probe errors or unbind.
Fix this by converting entire code into devm_regulator_bulk_get_enable() which also greatly simplifies the code.
Weakness: CWE-416
Which versions are affected by CVE-2025-38259?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2025-38259?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-38259 being exploited?
There is no known exploitation of CVE-2025-38259 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as AZL-64863, BELL-CVE-2025-38259, DEBIAN-CVE-2025-38259, GHSA-4542-8w7g-25qw, ROOT-OS-DEBIAN-11-CVE-2025-38259, ROOT-OS-DEBIAN-12-CVE-2025-38259 and 3 more.