[Bug 287625] net80211: kernel panic with 11ac support but no 11n

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=287625

--- Comment #9 from commit-hook@FreeBSD.org ---
A commit in branch main references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=f51c794cbc80682931d47264e3c18329bae0a2c1

commit f51c794cbc80682931d47264e3c18329bae0a2c1
Author:     Bjoern A. Zeeb <bz@FreeBSD.org>
AuthorDate: 2025-06-18 21:58:20 +0000
Commit:     Bjoern A. Zeeb <bz@FreeBSD.org>
CommitDate: 2025-06-19 01:23:12 +0000

    net80211: in ieee80211_sta_join() only do_ht if HT is avail

    In ieee80211_sta_join() there are currently two ways to set
    "do_ht": (1) after checking HT IEs are avail, and (2) after
    checking VHT IEs are avail and we are not on 2GHz.

    In the latter case no one checks that HT IEs are available and
    when we hit ieee80211_ht_updateparams_final() htinfo may be NULL
    and we panic.

    Avoid this by only checking for VHT if do_ht was set.
    No VHT without HT IEs.

    While here switch do_ht to be a bool.

    Sponsored by:   The FreeBSD Foundation
    MFC after:      3 days
    PR:             287625
    Fixes:          51172f62a753f
    Reviewed by:    adrian
    Differential Revision: https://reviews.freebsd.org/D50923

 sys/net80211/ieee80211_node.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

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