From patchwork Thu May 20 09:21:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 445674 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-24.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 16762C433ED for ; Thu, 20 May 2021 10:06:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EEBFB61353 for ; Thu, 20 May 2021 10:06:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235679AbhETKHZ (ORCPT ); Thu, 20 May 2021 06:07:25 -0400 Received: from mail.kernel.org ([198.145.29.99]:37248 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235555AbhETKFV (ORCPT ); Thu, 20 May 2021 06:05:21 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3B84060BD3; Thu, 20 May 2021 09:41:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621503663; bh=gwFZ3agbq/+KuI2F21BntZUnQo0O7Tuqe1YzjqS5MDc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MV2IwzqBH5+73xIrA6IlsM03mFSJUIxH8g6qtSM4JGhGfkwDpz/EjSC2X4k9LofZb vOU5LHmDmOQMNLcD5C34T/PXuZlRoLgoQZYdnCTi6WPfWCCgTfE1PwwtCdG0GD8I5g aVisR4pr+yAIiojlqJpHFrss7QSqF7hL+2msJYic= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, kernel test robot , "Gustavo A. R. Silva" , Kees Cook , Marcelo Ricardo Leitner , "David S. Miller" , Sasha Levin Subject: [PATCH 4.19 322/425] sctp: Fix out-of-bounds warning in sctp_process_asconf_param() Date: Thu, 20 May 2021 11:21:31 +0200 Message-Id: <20210520092142.004061745@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210520092131.308959589@linuxfoundation.org> References: <20210520092131.308959589@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Gustavo A. R. Silva [ Upstream commit e5272ad4aab347dde5610c0aedb786219e3ff793 ] Fix the following out-of-bounds warning: net/sctp/sm_make_chunk.c:3150:4: warning: 'memcpy' offset [17, 28] from the object at 'addr' is out of the bounds of referenced subobject 'v4' with type 'struct sockaddr_in' at offset 0 [-Warray-bounds] This helps with the ongoing efforts to globally enable -Warray-bounds and get us closer to being able to tighten the FORTIFY_SOURCE routines on memcpy(). Link: https://github.com/KSPP/linux/issues/109 Reported-by: kernel test robot Signed-off-by: Gustavo A. R. Silva Reviewed-by: Kees Cook Acked-by: Marcelo Ricardo Leitner Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- net/sctp/sm_make_chunk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c index ce6053be60bc..dc51e14f568e 100644 --- a/net/sctp/sm_make_chunk.c +++ b/net/sctp/sm_make_chunk.c @@ -3148,7 +3148,7 @@ static __be16 sctp_process_asconf_param(struct sctp_association *asoc, * primary. */ if (af->is_any(&addr)) - memcpy(&addr.v4, sctp_source(asconf), sizeof(addr)); + memcpy(&addr, sctp_source(asconf), sizeof(addr)); if (security_sctp_bind_connect(asoc->ep->base.sk, SCTP_PARAM_SET_PRIMARY,