From 1c4cecc9fd314de0dce8125b0d4b45967637a401 Mon Sep 17 00:00:00 2001
From: Liming Gao <liming.gao@intel.com>
Date: Fri, 9 Nov 2018 07:58:15 +0800
Subject: [PATCH] MdePkg BaseUefiDecompressLib: Fix UEFI Decompression logic
issue
https://bugzilla.tianocore.org/show_bug.cgi?id=1317
This is a regression issue caused by 2ec7953d49677142c5f7552e9e3d96fb406ba0c4.
In Decode() function, once mOutBuf is fully filled, Decode() should return.
Current logic misses the checker of mOutBuf after while() loop.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Liming Gao <liming.gao@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>
---
.../Library/BaseUefiDecompressLib/BaseUefiDecompressLib.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/MdePkg/Library/BaseUefiDecompressLib/BaseUefiDecompressLib.c b/MdePkg/Library/BaseUefiDecompressLib/BaseUefiDecompressLib.c
index 9fc637e058..c1e8c5581a 100644
--- a/MdePkg/Library/BaseUefiDecompressLib/BaseUefiDecompressLib.c
+++ b/MdePkg/Library/BaseUefiDecompressLib/BaseUefiDecompressLib.c
@@ -641,6 +641,12 @@ Decode (
BytesRemain--;
}
+ //
+ // Once mOutBuf is fully filled, directly return
+ //
+ if (Sd->mOutBuf >= Sd->mOrigSize) {
+ goto Done;
+ }
}
}