1 files changed, 11 insertions, 1 deletions
diff --git a/src/nvim/ex_getln.c b/src/nvim/ex_getln.c
index 9d0e3d542a..93fd62f107 100644
--- a/src/nvim/ex_getln.c
+++ b/src/nvim/ex_getln.c
@@ -4241,6 +4241,11 @@ int get_list_range(char **str, int *num1, int *num2)
   if (**str == '-' || ascii_isdigit(**str)) {  // parse "from" part of range
     vim_str2nr(*str, NULL, &len, 0, &num, NULL, 0, false, NULL);
     *str += len;
+    // overflow
+    if (num > INT_MAX) {
+      return FAIL;
+    }
+
     *num1 = (int)num;
     first = true;
   }
@@ -4249,8 +4254,13 @@ int get_list_range(char **str, int *num1, int *num2)
     *str = skipwhite((*str) + 1);
     vim_str2nr(*str, NULL, &len, 0, &num, NULL, 0, false, NULL);
     if (len > 0) {
-      *num2 = (int)num;
       *str = skipwhite((*str) + len);
+      // overflow
+      if (num > INT_MAX) {
+        return FAIL;
+      }
+
+      *num2 = (int)num;
     } else if (!first) {                  // no number given at all
       return FAIL;
     }