CVE-2023-53858 tty: serial: samsung_tty: Fix a memory leak in s3c24xx_serial_getclk() in case of error
A memory leak in the Samsung serial driver allows local attackers to cause a denial of service by triggering an error path.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-53858?
CVE-2023-53858 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:
tty: serial: samsung_tty: Fix a memory leak in s3c24xx_serial_getclk() in case of error
If clk_get_rate() fails, the clk that has just been allocated needs to be freed.
Which versions are affected by CVE-2023-53858?
How do I fix CVE-2023-53858?
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-2023-53858 being exploited?
There is no known exploitation of CVE-2023-53858 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-53858, DEBIAN-CVE-2023-53858, GHSA-6hf9-j2fm-qrj3, UBUNTU-CVE-2023-53858.