CVE-2023-54052 wifi: mt76: mt7921: fix skb leak by txs missing in AMSDU
A missing transmission status in AMSDU frames causes socket buffer leaks, temporarily stopping network connectivity in the mt7921 Wi-Fi driver.
- 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-2023-54052?
CVE-2023-54052 is a denial of service vulnerability in Linux, published on 24 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: mt76: mt7921: fix skb leak by txs missing in AMSDU
txs may be dropped if the frame is aggregated in AMSDU. When the problem shows up, some SKBs would be hold in driver to cause network stopped temporarily. Even if the problem can be recovered by txs timeout handling, mt7921 still need to disable txs in AMSDU to avoid this issue.
Which versions are affected by CVE-2023-54052?
How do I fix CVE-2023-54052?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-54052 being exploited?
There is no known exploitation of CVE-2023-54052 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-54052, DEBIAN-CVE-2023-54052, GHSA-4jff-2mpg-6xjx, ROOT-OS-UBUNTU-2204-CVE-2023-54052, UBUNTU-CVE-2023-54052.