netdev - [PATCH] iprule: Fix descriptor leak in flush

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Message-Id: <20240207201900.8813-1-maks.mishinFZ@gmail.com>
Date: Wed,  7 Feb 2024 23:19:00 +0300
From: Maks Mishin <maks.mishinfz@...il.com>
To: Stephen Hemminger <stephen@...workplumber.org>
Cc: Maks Mishin <maks.mishinFZ@...il.com>,
	netdev@...r.kernel.org
Subject: [PATCH] iprule: Fix descriptor leak in flush_rule()

Added closure of file descriptor `rth2` when returning from function.

Signed-off-by: Maks Mishin <maks.mishinFZ@...il.com>
---
 ip/iprule.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ip/iprule.c b/ip/iprule.c
index e503e5c6..ce40726a 100644
--- a/ip/iprule.c
+++ b/ip/iprule.c
@@ -534,8 +534,10 @@ static int flush_rule(struct nlmsghdr *n, void *arg)
 		n->nlmsg_type = RTM_DELRULE;
 		n->nlmsg_flags = NLM_F_REQUEST;
 
-		if (rtnl_open(&rth2, 0) < 0)
+		if (rtnl_open(&rth2, 0) < 0) {
+			rtnl_close(&rth2);
 			return -1;
+		}
 
 		if (rtnl_talk(&rth2, n, NULL) < 0)
 			return -2;
-- 
2.30.2