CVE-2023-53203 wifi: mt76: mt7996: rely on mt76_connac2_mac_tx_rate_val
A NULL pointer dereference in the mt7996 WiFi driver can cause a system crash, requiring a kernel patch to prevent denial of service.
- 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-2023-53203?
CVE-2023-53203 is a medium-severity vulnerability in Linux kernel, published on 15 Sep 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: mt76: mt7996: rely on mt76_connac2_mac_tx_rate_val
In order to fix a possible NULL pointer dereference in mt7996_mac_write_txwi() of vif pointer, export mt76_connac2_mac_tx_rate_val utility routine and reuse it in mt7996 driver.
Weakness: CWE-476
Which versions are affected by CVE-2023-53203?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-53203?
Apply the vendor's patch.
Is CVE-2023-53203 being exploited?
There is no known exploitation of CVE-2023-53203 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2023-53203, DEBIAN-CVE-2023-53203, GHSA-m476-vrj2-gqq7, UBUNTU-CVE-2023-53203.