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 6E1F36FA1 for ; Wed, 30 Nov 2022 18:37:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E7C73C433C1; Wed, 30 Nov 2022 18:37:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1669833461; bh=sKxE6Tg4H3AZRuWpOXQzKrZwCtWWGV+MsBjoklTO3B8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=zq3TjF9t5lAviqUREY17jnbUlFF7vpEk4Qq7l96otBiml32oLpxzeTU2BmnUH8Ry0 gcngqiwTm4Ui4bm50nvUxRAEJu0dsU/P7goGIa0hgrfHByIJx7+43BS8KfwDpIX6Ne JiBux4Mp15OL+/cog6EzH0tqiVK1c7ou2uhz7Jvg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, YueHaibing , Jon Maloy , Jakub Kicinski , Sasha Levin Subject: [PATCH 5.15 106/206] tipc: check skb_linearize() return value in tipc_disc_rcv() Date: Wed, 30 Nov 2022 19:22:38 +0100 Message-Id: <20221130180535.742590087@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221130180532.974348590@linuxfoundation.org> References: <20221130180532.974348590@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: YueHaibing [ Upstream commit cd0f6421162201e4b22ce757a1966729323185eb ] If skb_linearize() fails in tipc_disc_rcv(), we need to free the skb instead of handle it. Fixes: 25b0b9c4e835 ("tipc: handle collisions of 32-bit node address hash values") Signed-off-by: YueHaibing Acked-by: Jon Maloy Link: https://lore.kernel.org/r/20221119072832.7896-1-yuehaibing@huawei.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- net/tipc/discover.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/net/tipc/discover.c b/net/tipc/discover.c index e8630707901e..e8dcdf267c0c 100644 --- a/net/tipc/discover.c +++ b/net/tipc/discover.c @@ -211,7 +211,10 @@ void tipc_disc_rcv(struct net *net, struct sk_buff *skb, u32 self; int err; - skb_linearize(skb); + if (skb_linearize(skb)) { + kfree_skb(skb); + return; + } hdr = buf_msg(skb); if (caps & TIPC_NODE_ID128) -- 2.35.1