1 files changed, 7 insertions, 0 deletions
diff --git a/lib/setopt.c b/lib/setopt.c
index 22956a20f..06c5f5871 100644
--- a/lib/setopt.c
+++ b/lib/setopt.c
@@ -60,6 +60,13 @@ CURLcode Curl_setstropt(char **charp, const char *s)
   if(s) {
     char *str = strdup(s);
 
+    if(str) {
+      size_t len = strlen(str);
+      if(len > CURL_MAX_INPUT_LENGTH) {
+        free(str);
+        return CURLE_BAD_FUNCTION_ARGUMENT;
+      }
+    }
     if(!str)
       return CURLE_OUT_OF_MEMORY;