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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
include/grub/unicode.h
View file

@ -293,7 +293,7 @@ grub_unicode_glyph_dup (const struct grub_unicode_glyph *in)
grub_memcpy (out, in, sizeof (*in));
if (in->ncomb > ARRAY_SIZE (out->combining_inline))
{
out->combining_ptr = grub_malloc (in->ncomb * sizeof (out->combining_ptr[0]));
out->combining_ptr = grub_calloc (in->ncomb, sizeof (out->combining_ptr[0]));
if (!out->combining_ptr)
{
grub_free (out);
@ -315,7 +315,7 @@ grub_unicode_set_glyph (struct grub_unicode_glyph *out,
grub_memcpy (out, in, sizeof (*in));
if (in->ncomb > ARRAY_SIZE (out->combining_inline))
{
out->combining_ptr = grub_malloc (in->ncomb * sizeof (out->combining_ptr[0]));
out->combining_ptr = grub_calloc (in->ncomb, sizeof (out->combining_ptr[0]));
if (!out->combining_ptr)
return;
grub_memcpy (out->combining_ptr, in->combining_ptr,