Heap-buffer-overflow READ in ht_undo_impl() via codestream/channel
width mismatch in the HTJ2K decoder. HTJ2K support (OpenEXRCore
internal_ht.cpp / ht_undo_impl) was added in 3.4.0; affected range
is 3.4.0-3.4.11. The codec does not exist in 3.1.x, so 3.1.13 is
not affected (Debian reports only a fixed_version, not the affected
range).