netdev - [PATCH iproute2] tc: e_bpf: fix memory leak in parse

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Date:   Mon, 19 Apr 2021 15:36:57 +0200
From:   Andrea Claudi <aclaudi@...hat.com>
To:     netdev@...r.kernel.org
Cc:     stephen@...workplumber.org, dsahern@...il.com
Subject: [PATCH iproute2] tc: e_bpf: fix memory leak in parse_bpf()

envp_run is dinamically allocated with a malloc, and not freed in the
out: return path. This commit fix it.

Signed-off-by: Andrea Claudi <aclaudi@...hat.com>
---
 tc/e_bpf.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tc/e_bpf.c b/tc/e_bpf.c
index a48393b7..517ee5b3 100644
--- a/tc/e_bpf.c
+++ b/tc/e_bpf.c
@@ -159,7 +159,9 @@ static int parse_bpf(struct exec_util *eu, int argc, char **argv)
 
 	envp_run[env_num - 1] = NULL;
 out:
-	return execvpe(argv_run[0], argv_run, envp_run);
+	ret = execvpe(argv_run[0], argv_run, envp_run);
+	free(envp_run);
+	return ret;
 
 err_free_env:
 	for (--i; i >= env_old; i--)
-- 
2.30.2