In grub-core/kern/efi/mm.c, grub_efi_finish_boot_services() has an instance
where the memory for the variable finish_mmap_buf is freed, but on the next
iteration of a while loop, grub_efi_get_memory_map() uses finish_mmap_buf. To
prevent this, we can set finish_mmap_buf to NULL after the free.
Sig
In grub-core/loader/multiboot_elfxx.c, we need to make sure that the program
header offset is less than the file size along with the MULTIBOOT_SEARCH
constant. We can do so by setting the variable phlimit to the minimum value of
the two limits and check it each time we change program header index t
In grub-core/loader/multiboot_elfxx.c, the code is filling an area of memory
with grub_memset() but doesn't check if there is space in the allocated memory
before doing so. To make sure we aren't zeroing memory past the allocated memory
region, we need to check that the offset into the allocated me
In grub-core/loader/multiboot_elfxx.c, space is being allocated for the section
header region, but isn't verifying if the region is within the file's size.
Before calling grub_calloc(), we can add a conditional to check if the section
header region is smaller than the file size.
Fixes: CID 314029
Coverity has listed two untrusted loop bound bugs in
grub-core/loader/multiboot_elfxx.c. They are CID 314029 and CID 314038. After
testing the first patch, the CID changed to an untrusted loop bound for line
244: shdr = grub_calloc (shnum, ehdr->e_shentsize);. I added a second patch to
address this
From: Darren Kenny
While performing fuzz testing with XFS filesystem images with ASAN
enabled, several issues were found where the memory accesses are made
beyond the data that is allocated into the struct grub_xfs_data
structure's data field.
The existing stucture didn't store the size of the m
