grub/grub-core/loader
Alexey Makhalov 61ff5602fe relocator: Protect grub_relocator_alloc_chunk_align() max_addr against integer underflow
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>
2020-07-29 16:55:48 +02:00
..
arm calloc: Use calloc() at most places 2020-07-29 16:55:47 +02:00
arm64 efi: Rename armxx to arch 2019-02-25 11:28:44 +01:00
efi calloc: Use calloc() at most places 2020-07-29 16:55:47 +02:00
i386 relocator: Protect grub_relocator_alloc_chunk_align() max_addr against integer underflow 2020-07-29 16:55:48 +02:00
ia64/efi verifiers: IA-64 fallout cleanup 2019-03-20 11:38:28 +01:00
mips relocator: Protect grub_relocator_alloc_chunk_align() max_addr against integer underflow 2020-07-29 16:55:48 +02:00
powerpc/ieee1275 verifiers: PowerPC fallout cleanup 2019-03-20 11:38:28 +01:00
riscv RISC-V: Add Linux load logic 2019-02-25 11:33:06 +01:00
sparc64/ieee1275 arm-uboot, ia64, sparc64: Fix up grub_file_open() calls 2018-11-16 14:42:51 +01:00
aout.c Implement automatic module license checking according to new GNU 2011-04-11 23:01:51 +02:00
linux.c verifiers: File type for fine-grained signature-verification controlling 2018-11-09 13:25:31 +01:00
lzss.c Add LZSS Mach-O support (needed for new xnu kernelcache). 2012-02-29 13:26:13 +01:00
macho.c calloc: Use calloc() at most places 2020-07-29 16:55:47 +02:00
macho32.c * grub-core/loader/machoXX.c: Fix compilation on non-i386. 2013-12-17 22:44:46 +01:00
macho64.c * grub-core/loader/machoXX.c: Fix compilation on non-i386. 2013-12-17 22:44:46 +01:00
machoXX.c Simplify few strings. 2013-05-07 11:44:15 +02:00
multiboot.c relocator: Protect grub_relocator_alloc_chunk_align() max_addr against integer underflow 2020-07-29 16:55:48 +02:00
multiboot_elfxx.c relocator: Protect grub_relocator_alloc_chunk_align() max_addr against integer underflow 2020-07-29 16:55:48 +02:00
multiboot_mbi2.c relocator: Protect grub_relocator_alloc_chunk_align() max_addr against integer underflow 2020-07-29 16:55:48 +02:00
xnu.c relocator: Protect grub_relocator_alloc_chunk_addr() input args against integer underflow/overflow 2020-07-29 16:55:48 +02:00
xnu_resume.c relocator: Protect grub_relocator_alloc_chunk_align() max_addr against integer underflow 2020-07-29 16:55:48 +02:00