UefiPayloadPkg: Integer Overflow in CreateHob() #5252
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REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4166 Fix integer overflow in various CreateHob instances. Fixes: CVE-2022-36765 The CreateHob() function aligns the requested size to 8 performing the following operation: ``` HobLength = (UINT16)((HobLength + 0x7) & (~0x7)); ``` No checks are performed to ensure this value doesn't overflow, and could lead to CreateHob() returning a smaller HOB than requested, which could lead to OOB HOB accesses. Reported-by: Marc Beatove <[email protected]> Cc: Guo Dong <[email protected]> Cc: Sean Rhodes <[email protected]> Cc: James Lu <[email protected]> Reviewed-by: Gua Guo <[email protected]> Cc: John Mathew <[email protected]> Authored-by: Gerd Hoffmann <[email protected]> Signed-off-by: Gua Guo <[email protected]>
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