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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/osdep/windows/platform.c
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@ -225,8 +225,8 @@ grub_install_register_efi (grub_device_t efidir_grub_dev,
grub_util_error ("%s", _("no EFI routines are available when running in BIOS mode"));
distrib8_len = grub_strlen (efi_distributor);
distributor16 = xmalloc ((distrib8_len + 1) * GRUB_MAX_UTF16_PER_UTF8
* sizeof (grub_uint16_t));
distributor16 = xcalloc (distrib8_len + 1,
GRUB_MAX_UTF16_PER_UTF8 * sizeof (grub_uint16_t));
distrib16_len = grub_utf8_to_utf16 (distributor16, distrib8_len * GRUB_MAX_UTF16_PER_UTF8,
(const grub_uint8_t *) efi_distributor,
distrib8_len, 0);