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Start for freethunderbolt: Bound root directory content to block size
In the Linux kernel, the following vulnerability has been resolved:
thunderbolt: Bound root directory content to block size
__tb_property_parse_dir() does not check that content_offset + content_len fits within block_len for the root directory case. When rootdir->length equals or exceeds block_len - 2, the entry loop reads past the allocated property block.
Add a bounds check after computing content_offset and content_len to reject directories whose content extends past the block.