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tipc: check skb_linearize() return value in tipc_disc_rcv()

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[ Upstream commit cd0f6421162201e4b22ce757a1966729323185eb ]

If skb_linearize() fails in tipc_disc_rcv(), we need to free the skb instead of
handle it.

Fixes: 25b0b9c4e8 ("tipc: handle collisions of 32-bit node address hash values")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Jon Maloy <jmaloy@redhat.com>
Link: https://lore.kernel.org/r/20221119072832.7896-1-yuehaibing@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
YueHaibing 2022-11-19 15:28:32 +08:00 committed by Greg Kroah-Hartman
parent f46826a6fc
commit cbf4d5ea57
1 changed files with 4 additions and 1 deletions
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5
net/tipc/discover.c
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@ -208,7 +208,10 @@ 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)