Created attachment 225221 [details]
patch: git diff file
FreeBSD is also affected by the A-MSDU design flaw in Wi-Fi (CVE-2020-24588). For background see Section 3 in https://papers.mathyvanhoef.com/usenix2021.pdf
This vulnerability can be reproduced using the FragAttack test tool at https://github.com/vanhoefm/fragattacks with the test case "amsdu-inject-bad" (the injected ping request should be rejected by the kernel).
The attached patches fixes this vulnerability. It was tested using a Belkin F5D8053 (run driver) in client mode.
This one is here: