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 6EBBAC4167B for ; Sun, 29 Oct 2023 23:06:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231834AbjJ2XGA (ORCPT ); Sun, 29 Oct 2023 19:06:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43770 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231846AbjJ2XF2 (ORCPT ); Sun, 29 Oct 2023 19:05:28 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EEDE36E8D; Sun, 29 Oct 2023 16:01:41 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0D54DC433CB; Sun, 29 Oct 2023 23:01:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1698620501; bh=X5gW/IKRH0gSCzo1RVJwjhXb3IQF5Zegx0zxC3MlmTs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FiCgoR1OeAswNpr2BAgdwkpFWJYKnJiVSpN4aYcVMflDgoQYSZmTaBJ2UFTxlNYvY G304TNi0e9tPbI0NFavqaaPQMCVo/S6TRrtcEthvahxEzH7xmnBevX3u7SBQBhgcWG xgrGKuMNMfb35ymLBL0DBRe6AWtoAERbj5jkD5xkXQfysvqox3rg4KlkjRTQ3BUsaV bdprhmmAp8Et0V4GuDU0RmbzM0UQiJFP9mDrAuLvaY72CoU5kUar2w4thrhLBVoZlw tjWOdSX4L54QpOJX/xj6+DdkgUHJgUZfQWedMNdryVujR/oHnBgbxWpV4B1IOZWAIa CRTHSroLwIfYA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ma Ke , Steffen Klassert , Sasha Levin , davem@davemloft.net, dsahern@kernel.org, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 02/12] net: ipv6: fix return value check in esp_remove_trailer Date: Sun, 29 Oct 2023 19:01:15 -0400 Message-ID: <20231029230135.793281-2-sashal@kernel.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231029230135.793281-1-sashal@kernel.org> References: <20231029230135.793281-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 4.19.297 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Ma Ke [ Upstream commit dad4e491e30b20f4dc615c9da65d2142d703b5c2 ] 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: Sasha Levin --- net/ipv6/esp6.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c index d847ffbe97451..6529e46ad0914 100644 --- a/net/ipv6/esp6.c +++ b/net/ipv6/esp6.c @@ -517,7 +517,9 @@ static inline int esp_remove_trailer(struct sk_buff *skb) 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]; -- 2.42.0