From 5eef6624f11cdb4c91d8f80237f118fcaf0dc159 Mon Sep 17 00:00:00 2001
From: SergeySlice <sergey.slice@gmail.com>
Date: Sun, 26 Apr 2020 08:32:48 +0300
Subject: [PATCH] avoid infinite loop while kext patch

Signed-off-by: SergeySlice <sergey.slice@gmail.com>
---
 rEFIt_UEFI/Platform/kext_patcher.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/rEFIt_UEFI/Platform/kext_patcher.cpp b/rEFIt_UEFI/Platform/kext_patcher.cpp
index 61e6b2f7e..cf3c93996 100644
--- a/rEFIt_UEFI/Platform/kext_patcher.cpp
+++ b/rEFIt_UEFI/Platform/kext_patcher.cpp
@@ -1010,6 +1010,10 @@ VOID AnyKextPatch(UINT8 *Driver, UINT32 DriverSize, CHAR8 *InfoPlist, UINT32 Inf
           j    += Entry->KernelAndKextPatches->KextPatches[N].SearchLen - 1;
         }
       }
+      if (!Entry->KernelAndKextPatches->KextPatches[i].StartPattern ||
+          !Entry->KernelAndKextPatches->KextPatches[i].StartPatternLen) {
+        break;
+      }
       j++; curs++;
     }
   } else {