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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
Download patch file Download diff file Expand all files Collapse all files

2
grub-core/tests/fake_input.c
View file

@ -49,7 +49,7 @@ grub_terminal_input_fake_sequence (int *seq_in, int nseq_in)
saved = grub_term_inputs;
if (seq)
grub_free (seq);
seq = grub_malloc (nseq_in * sizeof (seq[0]));
seq = grub_calloc (nseq_in, sizeof (seq[0]));
if (!seq)
return;

6
grub-core/tests/video_checksum.c
View file

@ -336,7 +336,7 @@ grub_video_capture_write_bmp (const char *fname,
{
case 4:
{
grub_uint8_t *buffer = xmalloc (mode_info->width * 3);
grub_uint8_t *buffer = xcalloc (3, mode_info->width);
grub_uint32_t rmask = ((1 << mode_info->red_mask_size) - 1);
grub_uint32_t gmask = ((1 << mode_info->green_mask_size) - 1);
grub_uint32_t bmask = ((1 << mode_info->blue_mask_size) - 1);
@ -367,7 +367,7 @@ grub_video_capture_write_bmp (const char *fname,
}
case 3:
{
grub_uint8_t *buffer = xmalloc (mode_info->width * 3);
grub_uint8_t *buffer = xcalloc (3, mode_info->width);
grub_uint32_t rmask = ((1 << mode_info->red_mask_size) - 1);
grub_uint32_t gmask = ((1 << mode_info->green_mask_size) - 1);
grub_uint32_t bmask = ((1 << mode_info->blue_mask_size) - 1);
@ -407,7 +407,7 @@ grub_video_capture_write_bmp (const char *fname,
}
case 2:
{
grub_uint8_t *buffer = xmalloc (mode_info->width * 3);
grub_uint8_t *buffer = xcalloc (3, mode_info->width);
grub_uint16_t rmask = ((1 << mode_info->red_mask_size) - 1);
grub_uint16_t gmask = ((1 << mode_info->green_mask_size) - 1);
grub_uint16_t bmask = ((1 << mode_info->blue_mask_size) - 1);