[snprintf] Check for '\0' to prevent undef memory read

2022-12-03 08:14:14 +05:30
parent e707ffe58b
commit 8ac89f8d05
1 changed files with 2 additions and 0 deletions
--- a/lib/util/snprintf.c
+++ b/lib/util/snprintf.c
@@ -1154,6 +1154,8 @@ __find_arguments(const char *fmt0, va_list ap, union arg **argtable)
 	for (;;) {
 		for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
 			/* void */;
+		if ( ch == '\0' )
+			goto done;
 		fmt++;		/* skip over '%' */

 		flags = 0;