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 C82BCC001E0 for ; Mon, 23 Oct 2023 11:16:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233726AbjJWLQh (ORCPT ); Mon, 23 Oct 2023 07:16:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32930 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233714AbjJWLQe (ORCPT ); Mon, 23 Oct 2023 07:16:34 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 557ECA4 for ; Mon, 23 Oct 2023 04:16:33 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9A094C433C7; Mon, 23 Oct 2023 11:16:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1698059793; bh=wb+R7tyIk0PGnaaTOibhKy5LlUbjKs4jKjtLXLuv7Ok=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qqXcUeamQMcv03xcA34DELxkL4s3CG/fGwCew9o0n+Hj+XXOP9yGpK9xt+1VFhPzp BDv8XYaTIt/fBjdAw2QuH8Se+QhSvDdT0nliDU/rSqj6B+eJtl58m6NYWN9J79aFjR 7UJm2/5htZqCd66XQDJY2fkSdZ2lvxd5VSzuvo3c= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ma Ke , Steffen Klassert Subject: [PATCH 4.19 54/98] net: ipv4: fix return value check in esp_remove_trailer Date: Mon, 23 Oct 2023 12:56:43 +0200 Message-ID: <20231023104815.520999683@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231023104813.580375891@linuxfoundation.org> References: <20231023104813.580375891@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ma Ke commit 513f61e2193350c7a345da98559b80f61aec4fa6 upstream. In esp_remove_trailer(), to avoid an unexpected result returned by pskb_trim, we should check the return value of pskb_trim(). Signed-off-by: Ma Ke Signed-off-by: Steffen Klassert Signed-off-by: Greg Kroah-Hartman --- net/ipv4/esp4.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/net/ipv4/esp4.c +++ b/net/ipv4/esp4.c @@ -565,7 +565,9 @@ static inline int esp_remove_trailer(str skb->csum = csum_block_sub(skb->csum, csumdiff, skb->len - trimlen); } - pskb_trim(skb, skb->len - trimlen); + ret = pskb_trim(skb, skb->len - trimlen); + if (unlikely(ret)) + return ret; ret = nexthdr[1];