utils-std

commit: 89079e2ff003563e8b1a63a8c6233b115ff5b05b
parent 226efce255762325c4575f1ad42143ecd1d395ae
Author: Haelwenn (lanodan) Monnier <contact@hacktivis.me>
Date:   Mon, 23 Sep 2024 05:22:42 +0200

cmd/paste: check against overflow prior to calloc

Diffstat:
M
cmd/paste.c
2
++

1 file changed, 2 insertions(+), 0 deletions(-)
diff --git a/cmd/paste.c b/cmd/paste.c
@@ -36,6 +36,7 @@
 #include <errno.h>
 #include <limits.h>
 #include <locale.h>
+#include <stdint.h> // SIZE_MAX
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -71,6 +72,7 @@ main(int argc, char *argv[])
 			arg = optarg;
 			len = mbsrtowcs(NULL, &arg, 0, NULL);
 			if(len == (size_t)-1) err(1, "error: delimiters");
+			if(len == SIZE_MAX) err(1, NULL);
 			warg = calloc((len + 1), sizeof(*warg));
 			if(warg == NULL) err(1, NULL);
 			arg = optarg;