CVE-2023-53808 wifi: mwifiex: fix memory leak in mwifiex_histogram_read()
A memory leak in the mwifiex Wi-Fi driver allows local attackers to cause a denial of service by exhausting kernel memory.
- 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-2023-53808?
CVE-2023-53808 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:
wifi: mwifiex: fix memory leak in mwifiex_histogram_read()
Always free the zeroed page on return from 'mwifiex_histogram_read()'.
Which versions are affected by CVE-2023-53808?
How do I fix CVE-2023-53808?
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-2023-53808 being exploited?
There is no known exploitation of CVE-2023-53808 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-53808, DEBIAN-CVE-2023-53808, GHSA-v6fm-8984-7m43, UBUNTU-CVE-2023-53808.