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-rw-r--r--utils/utils.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/utils/utils.c b/utils/utils.c
index de0de0b72..953cc5cad 100644
--- a/utils/utils.c
+++ b/utils/utils.c
@@ -146,6 +146,10 @@ nserror vsnstrjoin(char **str, size_t *size, char sep, size_t nelm, va_list ap)
*/
for (elm_idx = 0; elm_idx < nelm; elm_idx++) {
elm[elm_idx] = va_arg(ap, const char *);
+ /* check the argument is not NULL */
+ if (elm[elm_idx] == NULL) {
+ return NSERROR_BAD_PARAMETER;
+ }
elm_len[elm_idx] = strlen(elm[elm_idx]);
fname_len += elm_len[elm_idx];
}