From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 328F92DE6E3; Tue, 12 May 2026 18:07:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778609231; cv=none; b=WEtN5ByEJ1X078ZEMNmcgU8T83Uw4DdYK+esHALNp25pY7MT7InxDll+Igef+3PslU0Pttc9nyeIkoCjYn73BBlCL7a907mmz28uOVTkkcZhR2URa4Y1ruPEnWH3hkHLF8XcYYARjO+QTEt4AyVmNaMfcC2SyaxdOvGsT0u/g5Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778609231; c=relaxed/simple; bh=Gv7lVlOXq+KtJf4BxmFb63p3vtuws3j5YD6O83/uoVM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=EjpYNkHvQoPVfKNEwh9iW0myCwNiyi2oIAxGNJ4r6+2ql1nA5UV9X2hEWuh9/1NItUjCRpzLbf55/Pck8WzKsxbY2dccgZSQrzA/7BiFZ8ngzOv3ZZCvMoFepyv482uBJDboDYSqOINFmuN+jTdzEcnC/jBN9Ke+wz7eMp2Hha8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=oZN7Fv4u; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="oZN7Fv4u" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B546DC2BCB0; Tue, 12 May 2026 18:07:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778609231; bh=Gv7lVlOXq+KtJf4BxmFb63p3vtuws3j5YD6O83/uoVM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oZN7Fv4urkV5MLU9y7TOqIOeKbdkJIVC6SpFIAcoRC/Rp0pa8FSb6uplgbPRBiU2d WoVVgk75pYVDVMpGeknl31jQwwsxokdIZZ2NbkGvr0FZ5kWJPMGGm9nfSVEqFESsgV 8vFBaPW0nHik+CSRtf3w7FzsQi9XSzi8gHvTHIxU= 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 7.0 074/307] Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_new_connection_cb() Date: Tue, 12 May 2026 19:37:49 +0200 Message-ID: <20260512173941.683776274@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260512173940.117428952@linuxfoundation.org> References: <20260512173940.117428952@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.0-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 @@ -1498,6 +1498,9 @@ static struct l2cap_chan *l2cap_sock_new { struct sock *sk, *parent = chan->data; + if (!parent) + return NULL; + lock_sock(parent); /* Check for backlog size */