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Mac OS X fails to properly handle corrupted UDTO HFS+ image structures (ex. bad sectors), leading to an exploitable denial of service condition. Although it hasn't been checked further, memory corruption is present under certain conditions (in this particular case, unlikely to allow arbitrary code execution).
Failure to handle mounting of corrupt filesystem streams may lead to a local denial of service condition when SELinux hooks are enabled. This particular vulnerability is caused by a null pointer dereference in the superblock_doinit function.
