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From: syzbot <syzbot+5c1ca6ccaa1215781cac@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org
Subject: Forwarded: Re: KASAN: stack-out-of-bounds Write in carl9170_handle_command_response
Date: Fri, 19 Jun 2026 15:15:13 -0700	[thread overview]
Message-ID: <6a35bf71.ff649fcc.f6936.0001.GAE@google.com> (raw)
In-Reply-To: <69eab802.a00a0220.17a17.0049.GAE@google.com>

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***

Subject: Re: KASAN: stack-out-of-bounds Write in carl9170_handle_command_response
Author: doruk@0sec.ai

#syz test

diff --git a/drivers/net/wireless/ath/carl9170/rx.c b/drivers/net/wireless/ath/carl9170/rx.c
index 908c4c8..897e682 100644
--- a/drivers/net/wireless/ath/carl9170/rx.c
+++ b/drivers/net/wireless/ath/carl9170/rx.c
@@ -150,7 +150,8 @@ static void carl9170_cmd_callback(struct ar9170 *ar, u32 len, void *buffer)
 	spin_lock(&ar->cmd_lock);
 	if (ar->readbuf) {
 		if (len >= 4)
-			memcpy(ar->readbuf, buffer + 4, len - 4);
+			memcpy(ar->readbuf, buffer + 4,
+			       min_t(unsigned int, len - 4, ar->readlen));
 
 		ar->readbuf = NULL;
 	}
-- 
2.43.0


      parent reply	other threads:[~2026-06-19 22:15 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-24  0:23 [syzbot] [wireless?] [usb?] KASAN: stack-out-of-bounds Write in carl9170_handle_command_response syzbot
2026-04-24  1:11 ` Forwarded: [PATCH] wifi: carl9170: fix stack-out-of-bounds in carl9170_cmd_callback syzbot
2026-06-19 22:15 ` syzbot [this message]

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