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

[Yajun Deng]

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.d...@linux.dev>
---
 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