Add buffer range check.

apple · Oct 1, 2021 · 092c373 · 092c373
1 parent 41203cb
commit 092c373
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/cups/snprintf.c b/cups/snprintf.c
@@ -323,8 +323,8 @@ _cups_vsnprintf(char *buffer, /* O - Output buffer */
  * Nul-terminate the string and return the number of characters needed.
  */
 
- if (bufptr)
-  *bufptr = '\0';
+ if (bufptr && bufptr < bufend)
+ *bufptr = '\0';
 
  return (bytes);
 }