[all-commits] [llvm/llvm-project] 1fa073: [MachO] Stop parsing past end of rebase/bind table...

[Zixu Wang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1fa073ab896e65c55ff63487be0b41d7cea9aa77
      https://github.com/llvm/llvm-project/commit/1fa073ab896e65c55ff63487be0b41d7cea9aa77
  Author: Zixu Wang <9819235+zixu-w at users.noreply.github.com>
  Date:   2024-05-30 (Thu, 30 May 2024)

  Changed paths:
    M llvm/lib/Object/MachOObjectFile.cpp
    A llvm/test/Object/Inputs/MachO/rebase-bind-table-trailing-opcode.yaml
    A llvm/test/Object/macho-rebase-bind-trailing-opcode-boundary.test

  Log Message:
  -----------
  [MachO] Stop parsing past end of rebase/bind table (#93897)

`MachORebaseEntry::moveNext()` and `MachOBindEntry::moveNext()` assume
that the rebase/bind table ends with `{REBASE|BIND}_OPCODE_DONE` or an
actual rebase/bind. However a valid rebase/bind table might also end
with other effectively no-op opcodes, which caused the parser to move
past the end and go into the next table, resulting in corrupted entries
or infinite loops.



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