From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4697432D42B; Sat, 30 May 2026 16:59:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780160362; cv=none; b=ld92ag1DdaJiWsO4uOzu1pPjZCotXt7ZvnppjLI95wTa92KD6edWdnLFlNsFs1ftGosaMmK6ZBsY7cnYXcXYXRCesxgELJ1JPDWCgX+Jmm/+2tUf+anknSIE775wn+GY5Ha2rOU9fPFGbKZfS6/ecBlgoI8baIxejBLAxPhnKLs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780160362; c=relaxed/simple; bh=z/wjeHk4aq/7JxaW+XZKKzWXfKCzOymynzlhFlgUH1Q=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OMA9aQDZ20IOkayApXZXgTnxtKN8xCRvJGWXk/lSpAribEn2MPJy9sexg2//3T2plIdzpZzFMEt4UCHKkrWQi3ACvb1FxQiiZT3+psAzdhtS8j1CJ0qcrvwvzMzOsLiVCd/qx/IYw7Co1BUU3fe0DmcrkdjryAH+0tk+47k08nc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=hWlU6qth; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="hWlU6qth" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8B6281F00893; Sat, 30 May 2026 16:59:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1780160361; bh=6UOsdrDrG6fKgeLD6/x+b/90kfTovRhgTYijfexczTs=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=hWlU6qthxtHIigZSEzN8SY2Livt9ZBjTWq59KJiRTT4/pT8ETuKOzTdauGOdOlwo3 ilwqGY6FxRXtQuR8pq3u5NUeJR8fQYw/Z8LkdHHdRgBLOEfdgk+vitpMPIakyI+OAo nHy1Rk06Ql/GJZ9xds5j9bdo/OHA69QT/0JF/54M= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable@kernel.org, Siwei Zhang , Luiz Augusto von Dentz Subject: [PATCH 6.1 318/969] Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_new_connection_cb() Date: Sat, 30 May 2026 17:57:22 +0200 Message-ID: <20260530160309.188553854@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260530160300.485627683@linuxfoundation.org> References: <20260530160300.485627683@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Siwei Zhang commit 0a120d96166301d7a95be75b52f843837dbd1219 upstream. Add the same NULL guard already present in l2cap_sock_resume_cb() and l2cap_sock_ready_cb(). Fixes: 80808e431e1e ("Bluetooth: Add l2cap_chan_ops abstraction") Cc: stable@kernel.org Signed-off-by: Siwei Zhang Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Greg Kroah-Hartman --- net/bluetooth/l2cap_sock.c | 3 +++ 1 file changed, 3 insertions(+) --- a/net/bluetooth/l2cap_sock.c +++ b/net/bluetooth/l2cap_sock.c @@ -1500,6 +1500,9 @@ static struct l2cap_chan *l2cap_sock_new { struct sock *sk, *parent = chan->data; + if (!parent) + return NULL; + lock_sock(parent); /* Check for backlog size */