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iptables/SOURCES/0046-nft-Avoid-memleak-in-e...

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From bee29f2820cafde1e04ebef049bc4c40c4dbbe18 Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Wed, 2 Jun 2021 11:55:20 +0200
Subject: [PATCH] nft: Avoid memleak in error path of nft_cmd_new()
If rule allocation fails, free the allocated 'cmd' before returning to
caller.
Fixes: a7f1e208cdf9c ("nft: split parsing from netlink commands")
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit eab75ed36a4f204ddab0c40ba42c5a300634d5c3)
---
iptables/nft-cmd.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/iptables/nft-cmd.c b/iptables/nft-cmd.c
index ed53c061edc6f..fd038503d87e1 100644
--- a/iptables/nft-cmd.c
+++ b/iptables/nft-cmd.c
@@ -35,8 +35,10 @@ struct nft_cmd *nft_cmd_new(struct nft_handle *h, int command,
if (state) {
rule = nft_rule_new(h, chain, table, state);
- if (!rule)
+ if (!rule) {
+ nft_cmd_free(cmd);
return NULL;
+ }
cmd->obj.rule = rule;
--
2.40.0