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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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2
grub-core/fs/tar.c
View file

@ -120,7 +120,7 @@ grub_cpio_find_file (struct grub_archelp_data *data, char **name,
if (data->linkname_alloc < linksize + 1)
{
char *n;
n = grub_malloc (2 * (linksize + 1));
n = grub_calloc (2, linksize + 1);
if (!n)
return grub_errno;
grub_free (data->linkname);