Branch: refs/heads/master
  Home:   https://github.com/tianocore/edk2
  Commit: 260b91a352b870a6d7c05bdf47bd4564e7677c7c
      
https://github.com/tianocore/edk2/commit/260b91a352b870a6d7c05bdf47bd4564e7677c7c
  Author: Khalid Ali <[email protected]>
  Date:   2026-03-23 (Mon, 23 Mar 2026)

  Changed paths:
    M MdeModulePkg/Core/Dxe/Hand/Notify.c

  Log Message:
  -----------
  MdeModulePkg/Core: Validate DXE event signature before usage

fixes: #11112

Currently, function RegisterProtocolNotify() doesn't check the validity
of event and it accepts any event pointer as long as pointer isn't NULL.
However event could be closed and freed which could lead to use after
free.

Always check event signature before usage and return
EFI_INVALID_PARAMTER for events with invalid signature.

Signed-off-by: Khalid Ali <[email protected]>



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