dc0a3a27d6
If the map was too big for the initial allocation, it was freed and replaced with a bigger one, but the free call still used the hard-coded size. Seems like this wasn't hit for a long time, because most firmware maps fit into 12K. This bug was triggered on Project Mu firmware with a big memory map, and results in the heap getting trashed and the firmware ASSERTING on corrupted heap guard values when GRUB exits. Signed-off-by: Mate Kukri <mate.kukri@canonical.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. See the file MAINTAINERS for information about the GRUB maintainers, etc. If you found a security vulnerability in the GRUB please check the SECURITY file to get more information how to properly report this kind of bugs to the maintainers. 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'