From 5bc794b5aec343f4888ef032f8ee1ed3a8c65493 Mon Sep 17 00:00:00 2001
From: Kevin Day <thekevinday@gmail.com>
Date: Mon, 21 Feb 2022 20:51:35 -0600
Subject: [PATCH] Security: Invalid read when using -bB.

The incorrect variable is being used when performing the size check.
This resulted in the wrong calculation and the subsequent invalid read.
---
 level_3/utf8/c/private-utf8.c        | 4 ++--
 level_3/utf8/c/private-utf8_binary.c | 1 +
 level_3/utf8/c/utf8.c                | 1 +
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/level_3/utf8/c/private-utf8.c b/level_3/utf8/c/private-utf8.c
index 6d700ac..2f58847 100644
--- a/level_3/utf8/c/private-utf8.c
+++ b/level_3/utf8/c/private-utf8.c
@@ -124,7 +124,7 @@ extern "C" {
     if (text->size == 1) {
       text->used = text->string[0] ? 1 : 0;
     }
-    else if (text->used == 2) {
+    else if (text->size == 2) {
       if (!text->string[0]) {
         text->used = 1;
       }
@@ -132,7 +132,7 @@ extern "C" {
         text->used = text->string[1] ? 2 : 1;
       }
     }
-    else if (text->used == 3) {
+    else if (text->size == 3) {
       if (!text->string[0]) {
         text->used = 1;
       }
diff --git a/level_3/utf8/c/private-utf8_binary.c b/level_3/utf8/c/private-utf8_binary.c
index 217bf5c..5a09803 100644
--- a/level_3/utf8/c/private-utf8_binary.c
+++ b/level_3/utf8/c/private-utf8_binary.c
@@ -88,6 +88,7 @@ extern "C" {
             utf8_print_signal_received(data, status);
 
             status = F_signal;
+
             break;
           }
         }
diff --git a/level_3/utf8/c/utf8.c b/level_3/utf8/c/utf8.c
index e4f7650..34d3b71 100644
--- a/level_3/utf8/c/utf8.c
+++ b/level_3/utf8/c/utf8.c
@@ -411,6 +411,7 @@ extern "C" {
           if (!((++signal_check) % utf8_signal_check_d)) {
             if (utf8_signal_received(&data)) {
               status = F_status_set_error(F_signal);
+
               break;
             }
 
-- 
1.8.3.1