https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=285821
Bug ID: 285821
Summary: rtwn/net80211 does not reject control frames not for
the current VAP
Product: Base System
Version: 15.0-CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: wireless
Assignee: wireless@FreeBSD.org
Reporter: jrt...@freebsd.org
With ifconfig wlan0 promisc, BARs make it through from rtwn into
ieee80211_recv_bar and get processed as if for the VAP, potentially sliding the
window (and other control frames could do things too, though those seem less
important). In normal operation this isn't typically hit, but wpa_supplicant
does put the interface temporarily in promiscuous mode via libpcap. Such frames
should be filtered in the same manner as non-control frames.
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