CVE-2025-38343 wifi: mt76: mt7996: drop fragments with multicast or broadcast RA
The Linux kernel mt76 driver now drops invalid fragmented multicast frames, preventing potential protocol-level issues similar to FragAttacks.
- 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-2025-38343?
CVE-2025-38343 is a high-severity vulnerability in Linux kernel, published on 10 Jul 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: drop fragments with multicast or broadcast RA
IEEE 802.11 fragmentation can only be applied to unicast frames. Therefore, drop fragments with multicast or broadcast RA. This patch addresses vulnerabilities such as CVE-2020-26145.
Which versions are affected by CVE-2025-38343?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-38343?
Apply the vendor's patch.
Is CVE-2025-38343 being exploited?
There is no known exploitation of CVE-2025-38343 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-64977, BELL-CVE-2025-38343, DEBIAN-CVE-2025-38343, GHSA-xp3g-h23f-cgpc, ROOT-OS-DEBIAN-12-CVE-2025-38343, ROOT-OS-UBUNTU-2204-CVE-2025-38343 and 2 more.