[dpdk-stable] [PATCH v2] lib/cfgfile: replace strcat with strlcat

[Chaitanya Babu Talluri]

Replace strcat with strlcat to avoid buffer overflow.

Fixes: a6a47ac9c2 ("cfgfile: rework load function")
Cc: stable at dpdk.org

Signed-off-by: Chaitanya Babu Talluri <tallurix.chaitanya.babu at intel.com>
---
v2: Instead of strcat, used strlcat.
---
 lib/librte_cfgfile/rte_cfgfile.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/librte_cfgfile/rte_cfgfile.c b/lib/librte_cfgfile/rte_cfgfile.c
index 7d8c941ea..3296bb6f8 100644
--- a/lib/librte_cfgfile/rte_cfgfile.c
+++ b/lib/librte_cfgfile/rte_cfgfile.c
@@ -8,6 +8,7 @@
 #include <ctype.h>
 #include <errno.h>
 #include <rte_common.h>
+#include <rte_string_fns.h>
 
 #include "rte_cfgfile.h"
 
@@ -224,10 +225,11 @@ rte_cfgfile_load_with_params(const char *filename, int flags,
 			_strip(split[1], strlen(split[1]));
 			char *end = memchr(split[1], '\\', strlen(split[1]));
 
+			size_t split_len = strlen(split[1]) + 1;
 			while (end != NULL) {
 				if (*(end+1) == params->comment_character) {
 					*end = '\0';
-					strcat(split[1], end+1);
+					strlcat(split[1], end+1, split_len);
 				} else
 					end++;
 				end = memchr(end, '\\', strlen(end));
-- 
2.17.2