netdev - [PATCH] tc_exec: Fix descriptor leak in get_exec

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Message-Id: <20240207214242.19291-1-maks.mishinFZ@gmail.com>
Date: Thu,  8 Feb 2024 00:42:42 +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] tc_exec: Fix descriptor leak in get_exec_kind()

Found by RASU JSC

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

diff --git a/tc/tc_exec.c b/tc/tc_exec.c
index 182fbb4c..ae9e1f94 100644
--- a/tc/tc_exec.c
+++ b/tc/tc_exec.c
@@ -60,6 +60,9 @@ static struct exec_util *get_exec_kind(const char *name)
 
 	snprintf(buf, sizeof(buf), "%s_exec_util", name);
 	eu = dlsym(dlh, buf);
+	if (dlh != NULL)
+		dlclose(dlh);
+
 	if (eu == NULL)
 		goto noexist;
 reg:
-- 
2.30.2