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calloc: Use calloc() at most places

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This modifies most of the places we do some form of:

  X = malloc(Y * Z);

to use calloc(Y, Z) instead.

Among other issues, this fixes:
  - allocation of integer overflow in grub_png_decode_image_header()
    reported by Chris Coulson,
  - allocation of integer overflow in luks_recover_key()
    reported by Chris Coulson,
  - allocation of integer overflow in grub_lvm_detect()
    reported by Chris Coulson.

Fixes: CVE-2020-14308

Signed-off-by: Peter Jones <pjones@redhat.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Peter Jones 2020-06-15 12:26:01 -04:00 • committed by Daniel Kiper
parent 64e26162eb
commit f725fa7cb2
87 changed files with 179 additions and 178 deletions
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4
grub-core/mmap/mmap.c
View file

@ -143,9 +143,9 @@ grub_mmap_iterate (grub_memory_hook_t hook, void *hook_data)
/* Initialize variables. */
ctx.scanline_events = (struct grub_mmap_scan *)
grub_malloc (sizeof (struct grub_mmap_scan) * 2 * mmap_num);
grub_calloc (mmap_num, sizeof (struct grub_mmap_scan) * 2);
present = grub_zalloc (sizeof (present[0]) * current_priority);
present = grub_calloc (current_priority, sizeof (present[0]));
if (! ctx.scanline_events || !present)
{