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 B612C1A7264; Mon, 10 Mar 2025 17:33:01 +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=1741627981; cv=none; b=KGqBI8hbtXgGiCo9QKrvMhS9AG31Tk80rO3cOcTa6mZDM/n1nK27HxOHIOFmYi95b+mJEMvaxW8mELCMV3YcUgz65ASxg61pW8EpDUbhwiKLJR8HDxWGjZJtViOxpxNoUm6yECMNoht/09QOjV5Dy+q6BEwn3wb+o0BsgoQlQac= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741627981; c=relaxed/simple; bh=oB0/tzJw7k/fsPuLavSfO9rzjh6L+/gkh/9LBg4EaRU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=A4AhEpZcD3XGi7FEMW+fM7QCe36diSiEX02Q15fT1ciF69xSNw4TACGVAsJy78qgBloN3NMBA7BGp4szGbQC60FkQ1w18eXYbbVQU8hWM979rS7jKi43EMWsIx6BFivuckeq+LcuLGzpXs/Hs2GvKs3m0lqkq8j34y9ZPgsZ8Vo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ajUs+ICh; 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="ajUs+ICh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3BB40C4CEE5; Mon, 10 Mar 2025 17:33:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1741627981; bh=oB0/tzJw7k/fsPuLavSfO9rzjh6L+/gkh/9LBg4EaRU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ajUs+IChZun8nXAMmnHVmbzKydbNpx05E47KZ/UzBItkCcLbFAzfj78xqIknVK4s3 CWoMPTA3BoBtZR5MB/O+bU07SVwKKlAT7FLnLVHX9+xSBYaajKOVYqyi3U9vX+V+hn cRq1QFofZbYw1zZgY2ltaovUhWqHCdsXyKA8Luqs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Haoxiang Li , Luiz Augusto von Dentz Subject: [PATCH 6.6 047/145] Bluetooth: Add check for mgmt_alloc_skb() in mgmt_remote_name() Date: Mon, 10 Mar 2025 18:05:41 +0100 Message-ID: <20250310170436.635598489@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250310170434.733307314@linuxfoundation.org> References: <20250310170434.733307314@linuxfoundation.org> User-Agent: quilt/0.68 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 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Haoxiang Li commit f2176a07e7b19f73e05c805cf3d130a2999154cb upstream. Add check for the return value of mgmt_alloc_skb() in mgmt_remote_name() to prevent null pointer dereference. Fixes: ba17bb62ce41 ("Bluetooth: Fix skb allocation in mgmt_remote_name() & mgmt_device_connected()") Cc: stable@vger.kernel.org Signed-off-by: Haoxiang Li Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Greg Kroah-Hartman --- net/bluetooth/mgmt.c | 2 ++ 1 file changed, 2 insertions(+) --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -10443,6 +10443,8 @@ void mgmt_remote_name(struct hci_dev *hd skb = mgmt_alloc_skb(hdev, MGMT_EV_DEVICE_FOUND, sizeof(*ev) + (name ? eir_precalc_len(name_len) : 0)); + if (!skb) + return; ev = skb_put(skb, sizeof(*ev)); bacpy(&ev->addr.bdaddr, bdaddr);