BaseTools: Fix Section header size larger than elf file size bug

[mirror_edk2.git] / BaseTools / Source / C / GenFw / Elf32Convert.c

diff --git a/BaseTools/Source/C/GenFw/Elf32Convert.c b/BaseTools/Source/C/GenFw/Elf32Convert.c
index 436eb529ee37727d1d18194ecebe8402c4beeb7b..ac0e2b13771bbcefc4285b8483965d2330a7fb04 100644 (file)
--- a/BaseTools/Source/C/GenFw/Elf32Convert.c
+++ b/BaseTools/Source/C/GenFw/Elf32Convert.c
@@ -674,6 +674,9 @@ WriteSections32 (
       switch (Shdr->sh_type) {\r
       case SHT_PROGBITS:\r
         /* Copy.  */\r
+        if (Shdr->sh_offset + Shdr->sh_size > mFileBufferSize) {\r
+          return FALSE;\r
+        }\r
         memcpy(mCoffFile + mCoffSectionsOffset[Idx],\r
               (UINT8*)mEhdr + Shdr->sh_offset,\r
               Shdr->sh_size);\r