From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DE77EC001DE for ; Wed, 9 Aug 2023 11:19:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233496AbjHILT1 (ORCPT ); Wed, 9 Aug 2023 07:19:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57590 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233489AbjHILT0 (ORCPT ); Wed, 9 Aug 2023 07:19:26 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 744BDED for ; Wed, 9 Aug 2023 04:19:26 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 13461631AE for ; Wed, 9 Aug 2023 11:19:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 27EFCC433C7; Wed, 9 Aug 2023 11:19:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1691579965; bh=vvTBtE5pCtvUKuC222nnhiHNKzGu8puN9Z7cR1+aj1o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=r5v8pj3MkulAmjGFIjBXjb97EPAbgDb696zsU3m8Vpm50V4Rmb0xY5aRJtjcPu0O9 Togw9f0Hw3Q+22OUFW66sWEk5ALDgt0bUsM45K97vG5qf7XH65aZsGhw5ZYpzwxYYe VOmZWULd4ibM73a7kg0LLUKw9Ps8XykX3UMljC10= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Max Filippov Subject: [PATCH 4.19 180/323] xtensa: ISS: fix call to split_if_spec Date: Wed, 9 Aug 2023 12:40:18 +0200 Message-ID: <20230809103706.388899850@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230809103658.104386911@linuxfoundation.org> References: <20230809103658.104386911@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Max Filippov commit bc8d5916541fa19ca5bc598eb51a5f78eb891a36 upstream. split_if_spec expects a NULL-pointer as an end marker for the argument list, but tuntap_probe never supplied that terminating NULL. As a result incorrectly formatted interface specification string may cause a crash because of the random memory access. Fix that by adding NULL terminator to the split_if_spec argument list. Cc: stable@vger.kernel.org Fixes: 7282bee78798 ("[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 8") Signed-off-by: Max Filippov Signed-off-by: Greg Kroah-Hartman --- arch/xtensa/platforms/iss/network.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/xtensa/platforms/iss/network.c +++ b/arch/xtensa/platforms/iss/network.c @@ -236,7 +236,7 @@ static int tuntap_probe(struct iss_net_p init += sizeof(TRANSPORT_TUNTAP_NAME) - 1; if (*init == ',') { - rem = split_if_spec(init + 1, &mac_str, &dev_name); + rem = split_if_spec(init + 1, &mac_str, &dev_name, NULL); if (rem != NULL) { pr_err("%s: extra garbage on specification : '%s'\n", dev->name, rem);