From cd0f6421162201e4b22ce757a1966729323185eb Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Sat, 19 Nov 2022 15:28:32 +0800 Subject: tipc: check skb_linearize() return value in tipc_disc_rcv() 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 --- net/tipc/discover.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'net/tipc') 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) -- cgit