From 2827c523ce7fec4e6da7cd8a77be6a5c6ad8aab3 Mon Sep 17 00:00:00 2001
From: MysterD <myster@d>
Date: Sat, 23 Apr 2022 15:08:33 -0700
Subject: [PATCH] Fix memory corruption in download

---
 src/pc/network/packets/packet_download.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/pc/network/packets/packet_download.c b/src/pc/network/packets/packet_download.c
index 98883717..2996c6ad 100644
--- a/src/pc/network/packets/packet_download.c
+++ b/src/pc/network/packets/packet_download.c
@@ -68,9 +68,11 @@ static void mark_groups_loaded_from_hash(void) {
                 u64 ogIndexStart = fileStartOffset / GROUP_SIZE;
                 u64 ogIndexEnd = (fileStartOffset + mod->size) / GROUP_SIZE;
                 do {
-                    LOG_INFO("Marking group as required: %llu (%s)", ogIndexStart, file->relativePath);
-                    offsetGroupRequired[ogIndexStart] = 1;
-                    ogIndexStart++;
+                    if (ogIndexStart < sOffsetGroupCount) {
+                        LOG_INFO("Marking group as required: %llu (%s)", ogIndexStart, file->relativePath);
+                        offsetGroupRequired[ogIndexStart] = 1;
+                        ogIndexStart++;
+                    }
                 } while (ogIndexStart <= ogIndexEnd);
             }
             fileStartOffset += file->size;