CVE-2023-53748 media: mediatek: vcodec: Fix potential array out-of-bounds in decoder queue_setup
A local attacker can trigger an array out-of-bounds write in the MediaTek video codec driver, potentially leading to code execution or privilege escalation.
- 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-2023-53748?
CVE-2023-53748 is a high-severity memory corruption vulnerability in Linux, published on 8 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:
media: mediatek: vcodec: Fix potential array out-of-bounds in decoder queue_setup
variable *nplanes is provided by user via system call argument. The possible value of q_data->fmt->num_planes is 1-3, while the value of *nplanes can be 1-8. The array access by index i can cause array out-of-bounds.
Fix this bug by checking *nplanes against the array size.
Which versions are affected by CVE-2023-53748?
How do I fix CVE-2023-53748?
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-2023-53748 being exploited?
There is no known exploitation of CVE-2023-53748 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-53748, DEBIAN-CVE-2023-53748, GHSA-5682-9vmg-wm34, ROOT-OS-DEBIAN-11-CVE-2023-53748, ROOT-OS-UBUNTU-2204-CVE-2023-53748, UBUNTU-CVE-2023-53748.