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1) Fix buffer overflow in JUMP_BUFFER in the DXE Core StartImage()

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2035 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
mdkinney 2006-11-29 03:05:46 +00:00
parent 8572fea91c
commit 838c84ec7e
1 changed files with 2 additions and 2 deletions
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4
EdkModulePkg/Core/Dxe/Image/Image.c
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@ -953,12 +953,12 @@ Returns:
// JumpContext must be aligned on a CPU specific boundary. // JumpContext must be aligned on a CPU specific boundary.
// Overallocate the buffer and force the required alignment // Overallocate the buffer and force the required alignment
// //
Image->JumpBuffer = CoreAllocateBootServicesPool (sizeof (*Image->JumpContext) + BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT); Image->JumpBuffer = CoreAllocateBootServicesPool (sizeof (BASE_LIBRARY_JUMP_BUFFER) + BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT);
if (Image->JumpBuffer == NULL) { if (Image->JumpBuffer == NULL) {
PERF_END (ImageHandle, START_IMAGE_TOK, NULL, 0); PERF_END (ImageHandle, START_IMAGE_TOK, NULL, 0);
return EFI_OUT_OF_RESOURCES; return EFI_OUT_OF_RESOURCES;
} }
Image->JumpContext = (VOID *)((UINTN)(ALIGN_POINTER (Image->JumpBuffer, BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT)) + BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT); Image->JumpContext = ALIGN_POINTER (Image->JumpBuffer, BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT);
SetJumpFlag = SetJump (Image->JumpContext); SetJumpFlag = SetJump (Image->JumpContext);
// //