CVE-2023-53830 platform/x86: think-lmi: Fix memory leak when showing current settings
A memory leak in the Linux kernel think-lmi driver allows local attackers to cause denial of service by triggering malformed item string processing.
- 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-2023-53830?
CVE-2023-53830 is a memory corruption vulnerability in Linux, published on 9 Dec 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:
platform/x86: think-lmi: Fix memory leak when showing current settings
When retriving a item string with tlmi_setting(), the result has to be freed using kfree(). In current_value_show() however, malformed item strings are not freed, causing a memory leak. Fix this by eliminating the early return responsible for this.
Which versions are affected by CVE-2023-53830?
How do I fix CVE-2023-53830?
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-2023-53830 being exploited?
There is no known exploitation of CVE-2023-53830 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-53830, DEBIAN-CVE-2023-53830, GHSA-rhg6-xfgx-wqj9, UBUNTU-CVE-2023-53830.