Branch: refs/heads/master
  Home:   https://github.com/tianocore/edk2
  Commit: a859f4fc0397ec4a9d1af016b7e1f03ccf14b605
      
https://github.com/tianocore/edk2/commit/a859f4fc0397ec4a9d1af016b7e1f03ccf14b605
  Author: John Baldwin <j...@freebsd.org>
  Date:   2024-09-03 (Tue, 03 Sep 2024)

  Changed paths:
    M MdePkg/Library/UefiDevicePathLib/DevicePathToText.c

  Log Message:
  -----------
  MdePkg: Fix a buffer overread.

DevPathToTextUsbWWID allocates a separate copy of the SerialNumber
string to append a null terminator if the original string is not null
terminated.  However, by using AllocateCopyPool, it tries to copy
'Length + 1' words from the existing string containing 'Length'
characters into the target string.  Split the copy out to only copy
'Length' characters instead.

This was reported by GCC's -Wstringop-overread when compiling a copy
of this routine included in a library on FreeBSD.

Signed-off-by: John Baldwin <j...@freebsd.org>



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