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 D6CD51F955 for ; Tue, 1 Aug 2023 09:25:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 54D1DC433C8; Tue, 1 Aug 2023 09:25:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1690881950; bh=6trlCTXDvEEdpebaUiJa+pdRHQ6IluKLrWb0CSgbe84=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=L5A95E/i+thOTIq7CFb82CtP25AKek+6x5DVw2EQwr2oFmPwlym1UcVpNgx+l7VDM 3tbMX3E1WyBQXZhICVikT4mVqRJec9HhH3Rs/9BPccWyOUXMPNTHe9RbBJmIXN14bL gvpUmgV4tbqUNM7qsSdGxuytpx1bOUrkj1zUge/c= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yuanjun Gong , Tung Nguyen , Paolo Abeni , Sasha Levin Subject: [PATCH 5.15 080/155] tipc: check return value of pskb_trim() Date: Tue, 1 Aug 2023 11:19:52 +0200 Message-ID: <20230801091913.004335608@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230801091910.165050260@linuxfoundation.org> References: <20230801091910.165050260@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Yuanjun Gong [ Upstream commit e46e06ffc6d667a89b979701288e2264f45e6a7b ] goto free_skb if an unexpected result is returned by pskb_tirm() in tipc_crypto_rcv_complete(). Fixes: fc1b6d6de220 ("tipc: introduce TIPC encryption & authentication") Signed-off-by: Yuanjun Gong Reviewed-by: Tung Nguyen Link: https://lore.kernel.org/r/20230725064810.5820-1-ruc_gongyuanjun@163.com Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin --- net/tipc/crypto.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/tipc/crypto.c b/net/tipc/crypto.c index 4243d2ab8adfb..32447e8d94ac9 100644 --- a/net/tipc/crypto.c +++ b/net/tipc/crypto.c @@ -1971,7 +1971,8 @@ static void tipc_crypto_rcv_complete(struct net *net, struct tipc_aead *aead, skb_reset_network_header(*skb); skb_pull(*skb, tipc_ehdr_size(ehdr)); - pskb_trim(*skb, (*skb)->len - aead->authsize); + if (pskb_trim(*skb, (*skb)->len - aead->authsize)) + goto free_skb; /* Validate TIPCv2 message */ if (unlikely(!tipc_msg_validate(skb))) { -- 2.39.2