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From: Edward Adam Davis <eadavis@qq.com>
To: syzbot+4bcdddd48bb6f0be0da1@syzkaller.appspotmail.com
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [wireless?] UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
Date: Wed,  7 May 2025 19:30:32 +0800	[thread overview]
Message-ID: <tencent_06AC9518E9DAEE02CC847A366C002D4D6C0A@qq.com> (raw)
In-Reply-To: <680fd171.050a0220.2b69d1.045e.GAE@google.com>

#syz test

diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 741e6c7edcb7..6842c3011a99 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -1353,6 +1353,8 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 	hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
 	hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
 
+	if (!channels)
+		return -EINVAL;
 
 	local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
 				      sizeof(void *) * channels, GFP_KERNEL);


  parent reply	other threads:[~2025-05-07 11:39 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-28 19:05 syzbot
2025-04-29  2:38 ` Edward Adam Davis
2025-04-29  2:55   ` syzbot
2025-04-29  8:40 ` Edward Adam Davis
2025-04-29  9:01   ` syzbot
2025-04-29 10:23 ` Edward Adam Davis
2025-04-29 10:32   ` syzbot
2025-04-29 10:58 ` Edward Adam Davis
2025-04-29 11:19   ` syzbot
2025-04-30 10:13 ` Edward Adam Davis
2025-04-30 10:34   ` syzbot
2025-05-07 11:30 ` Edward Adam Davis [this message]
2025-05-07 11:46   ` syzbot
2025-05-07 13:23 ` Edward Adam Davis
2025-05-07 13:44   ` syzbot
2025-05-09 18:35 ` Kees Cook

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