9c3149a2f2
Do some sanity checking on data coming from the LUKS2 header. If segment.size is "dynamic", verify that the offset is not past the end of disk. Otherwise, check for errors from grub_strtoull() when converting segment size from string. If a GRUB_ERR_BAD_NUMBER error was returned, then the string was not a valid parsable number, so skip the key. If GRUB_ERR_OUT_OF_RANGE was returned, then there was an overflow in converting to a 64-bit unsigned integer. So this could be a very large disk (perhaps large RAID array). In this case skip the key too. Additionally, enforce some other limits and fail if needed. Signed-off-by: Glenn Washburn <development@efficientek.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This is GRUB 2, the second version of the GRand Unified Bootloader. GRUB 2 is rewritten from scratch to make GNU GRUB cleaner, safer, more robust, more powerful, and more portable. See the file NEWS for a description of recent changes to GRUB 2. See the file INSTALL for instructions on how to build and install the GRUB 2 data and program files. Please visit the official web page of GRUB 2, for more information. The URL is <http://www.gnu.org/software/grub/grub.html>. More extensive documentation is available in the Info manual, accessible using 'info grub' after building and installing GRUB 2. There are a number of important user-visible differences from the first version of GRUB, now known as GRUB Legacy. For a summary, please see: info grub Introduction 'Changes from GRUB Legacy'