From: Moon Hee Lee <moonhee.lee.ca@gmail.com>
To: syzbot+ededba317ddeca8b3f08@syzkaller.appspotmail.com,
syzkaller-bugs@googlegroups.com, linux-kernel@vger.kernel.org
Cc: moonhee.lee.ca@gmail.com
Subject: [PATCH] wifi: mac80211: reject opmode notification for unsupported channel widths
Date: Tue, 1 Jul 2025 14:11:06 -0700 [thread overview]
Message-ID: <20250701211105.280128-2-moonhee.lee.ca@gmail.com> (raw)
#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless.git main
---
net/mac80211/cfg.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index d9d88f2f2831..f2e96eb07e8f 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1959,6 +1959,21 @@ static int sta_link_apply_parameters(struct ieee80211_local *local,
ieee80211_sta_init_nss(link_sta);
if (params->opmode_notif_used) {
+ enum nl80211_chan_width width = link->conf->chanreq.oper.width;
+
+ switch (width) {
+ case NL80211_CHAN_WIDTH_20_NOHT:
+ case NL80211_CHAN_WIDTH_20:
+ case NL80211_CHAN_WIDTH_40:
+ case NL80211_CHAN_WIDTH_80:
+ case NL80211_CHAN_WIDTH_160:
+ case NL80211_CHAN_WIDTH_80P80:
+ case NL80211_CHAN_WIDTH_320:
+ break;
+ default:
+ return -EINVAL;
+ }
+
/* returned value is only needed for rc update, but the
* rc isn't initialized here yet, so ignore it
*/
--
2.43.0
next reply other threads:[~2025-07-01 21:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-01 21:11 Moon Hee Lee [this message]
2025-07-01 21:43 ` [syzbot] [wireless?] WARNING in _ieee80211_sta_cur_vht_bw syzbot
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