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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 authored and Daniel Kiper committed 2020-07-29 16:55:47 +02:00
1 parent 64e26162eb
commit f725fa7cb2
87 files changed
+179 -178
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grub-core/bus/usb/usbhub.c
+4 -4
View File
@@ -149,8 +149,8 @@ grub_usb_add_hub (grub_usb_device_t dev)
grub_usb_set_configuration (dev, 1);
dev->nports = hubdesc.portcnt;
dev->children = grub_zalloc (hubdesc.portcnt * sizeof (dev->children[0]));
dev->ports = grub_zalloc (dev->nports * sizeof (dev->ports[0]));
dev->children = grub_calloc (hubdesc.portcnt, sizeof (dev->children[0]));
dev->ports = grub_calloc (dev->nports, sizeof (dev->ports[0]));
if (!dev->children || !dev->ports)
{
grub_free (dev->children);
@@ -268,8 +268,8 @@ grub_usb_controller_dev_register_iter (grub_usb_controller_t controller, void *d
/* Query the number of ports the root Hub has. */
hub->nports = controller->dev->hubports (controller);
hub->devices = grub_zalloc (sizeof (hub->devices[0]) * hub->nports);
hub->ports = grub_zalloc (sizeof (hub->ports[0]) * hub->nports);
hub->devices = grub_calloc (hub->nports, sizeof (hub->devices[0]));
hub->ports = grub_calloc (hub->nports, sizeof (hub->ports[0]));
if (!hub->devices || !hub->ports)
{
grub_free (hub->devices);