[PATCH v3] netfilter: nf_conntrack_bridge: Fix memory leak when error

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It should be added kfree_skb_list() when err is not equal to zero
in nf_br_ip_fragment().

v2: keep this aligned with IPv6.
v3: modify iter.frag_list to iter.frag.

Fixes: 3c171f496ef5 ("netfilter: bridge: add connection tracking system")
Signed-off-by: Yajun Deng <yajun.deng@xxxxxxxxx>
---
 net/bridge/netfilter/nf_conntrack_bridge.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/net/bridge/netfilter/nf_conntrack_bridge.c b/net/bridge/netfilter/nf_conntrack_bridge.c
index 8d033a75a766..d184306e1ba8 100644
--- a/net/bridge/netfilter/nf_conntrack_bridge.c
+++ b/net/bridge/netfilter/nf_conntrack_bridge.c
@@ -88,6 +88,11 @@ static int nf_br_ip_fragment(struct net *net, struct sock *sk,
 
 			skb = ip_fraglist_next(&iter);
 		}
+
+		if (!err)
+			return 0;
+
+		kfree_skb_list(iter.frag);
 		return err;
 	}
 slow_path:
-- 
2.32.0




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