In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: don't allow injecting frames wider than the chanctx
Frames injected on a monitor interface can carry a radiotap
field requesting a bandwidth, which mac80211 passes down to
the driver regardless of the the actual operational bandwidth.
If the bandwidth requested is too wide, that triggers a warning
in hwsim:
WARN_ON(hwsim_get_chanwidth(bw) > hwsim_get_chanwidth(confbw))
Drop such frames entirely instead since they cannot be sent.
References 4
https://git.kernel.org/stable/c/73f48f7e16cadfc74f444ccd10c1d3ae253e2e27
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a5c715eda066cba5ce3372759188ba8636dca629
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c69718519a81e87284494d0c6e6eb7bdd834707a
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e14bf37bb2b3853012ff160131d1c6233f7a9cc9
416baaa9-dc9f-4396-8d5f-8c081fb06d67