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61ff5602fe
This commit introduces integer underflow mitigation in max_addr calculation
in grub_relocator_alloc_chunk_align() invocation.
It consists of 2 fixes:
1. Introduced grub_relocator_alloc_chunk_align_safe() wrapper function to perform
sanity check for min/max and size values, and to make safe invocation of
grub_relocator_alloc_chunk_align() with validated max_addr value. Replace all
invocations such as grub_relocator_alloc_chunk_align(..., min_addr, max_addr - size, size, ...)
by grub_relocator_alloc_chunk_align_safe(..., min_addr, max_addr, size, ...).
2. Introduced UP_TO_TOP32(s) macro for the cases where max_addr is 32-bit top
address (0xffffffff - size + 1) or similar.
Signed-off-by: Alexey Makhalov <amakhalov@vmware.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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| .. | ||
| coreboot | ||
| pc | ||
| bsd32.c | ||
| bsd64.c | ||
| bsd_pagetable.c | ||
| bsd.c | ||
| bsdXX.c | ||
| linux.c | ||
| multiboot_mbi.c | ||
| xen_file32.c | ||
| xen_file64.c | ||
| xen_file.c | ||
| xen_fileXX.c | ||
| xen.c | ||
| xnu.c | ||