From c78e186739b50d156cb3da5d08d70294f0490853 Mon Sep 17 00:00:00 2001
From: Bartek Fabiszewski <github@fabiszewski.net>
Date: Sat, 18 Sep 2021 21:56:15 +0200
Subject: [PATCH] Fix potential out-of-buffer read while parsing corrupt file,
 closes #38

---
 src/read.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/read.c b/src/read.c
index 0d2d9e4..666987f 100644
--- a/src/read.c
+++ b/src/read.c
@@ -752,6 +752,10 @@ MOBI_RET mobi_parse_huffdic(const MOBIData *m, MOBIHuffCdic *huffcdic) {
         }
         curr = curr->next;
     }
+    if (huffcdic->index_count != huffcdic->index_read) {
+        debug_print("CDIC: wrong read index count: %zu, total: %zu\n", huffcdic->index_read, huffcdic->index_count);
+        return MOBI_DATA_CORRUPT;
+    }
     return MOBI_SUCCESS;
 }