CVE-2025-38386 ACPICA: Refuse to evaluate a method if arguments are missing
A use-after-free in the Linux kernel ACPICA component allows a local attacker to cause a system crash by triggering a method evaluation with missing arguments.
- 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-2025-38386?
CVE-2025-38386 is a high-severity use after free vulnerability in Debian Debian Linux, published on 25 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:
ACPICA: Refuse to evaluate a method if arguments are missing
As reported in [1], a platform firmware update that increased the number of method parameters and forgot to update a least one of its callers, caused ACPICA to crash due to use-after-free.
Since this a result of a clear AML issue that arguably cannot be fixed up by the interpreter (it cannot produce missing data out of thin air), address it by making ACPICA refuse to evaluate a method if the caller attempts to pass fewer arguments than expected to it.
Weakness: CWE-416
Which versions are affected by CVE-2025-38386?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2025-38386?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2025-38386 being exploited?
There is no known exploitation of CVE-2025-38386 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as AZL-65765, AZL-72400, BELL-CVE-2025-38386, DEBIAN-CVE-2025-38386, GHSA-j523-44v9-5g5c, ROOT-OS-DEBIAN-11-CVE-2025-38386 and 4 more.