CVE-2023-53146 media: dw2102: Fix null-ptr-deref in dw2102_i2c_transfer()
A null pointer dereference in the Linux kernel dw2102 media driver allows local attackers to cause a system crash via crafted I2C transfer messages.
- 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-2023-53146?
CVE-2023-53146 is a medium-severity vulnerability in Linux kernel, published on 14 May 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: dw2102: Fix null-ptr-deref in dw2102_i2c_transfer()
In dw2102_i2c_transfer, msg is controlled by user. When msg[i].buf is null and msg[i].len is zero, former checks on msg[i].buf would be passed. Malicious data finally reach dw2102_i2c_transfer. If accessing msg[i].buf[0] without sanity check, null ptr deref would happen. We add check on msg[i].len to prevent crash.
Similar commit: commit 950e252cb469 ("[media] dw2102: limit messages to buffer size")
Weakness: CWE-476
Which versions are affected by CVE-2023-53146?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-53146?
Apply the vendor's patch.
Is CVE-2023-53146 being exploited?
There is no known exploitation of CVE-2023-53146 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2023-53146, DEBIAN-CVE-2023-53146, GHSA-7gp9-jx5j-42cf, UBUNTU-CVE-2023-53146.