netdev - [PATCH] iplink: Fix descriptor leak in get_link

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Date: Thu,  8 Feb 2024 00:04:50 +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] iplink: Fix descriptor leak in get_link_kind()

Found by RASU JSC

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

diff --git a/ip/iplink.c b/ip/iplink.c
index 95314af5..7e31b95c 100644
--- a/ip/iplink.c
+++ b/ip/iplink.c
@@ -168,6 +168,9 @@ struct link_util *get_link_kind(const char *id)
 
 	snprintf(buf, sizeof(buf), "%s_link_util", id);
 	l = dlsym(dlh, buf);
+	if (dlh != NULL)
+		dlclose(dlh);
+
 	if (l == NULL)
 		return NULL;
 
-- 
2.30.2