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>

1 files changed, 6 insertions, 0 deletions

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;

+      }

     }

   }