vbatts/grub
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

calloc: Use calloc() at most places

Browse source 
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/partmap/gpt.c
View file

@ -199,7 +199,7 @@ gpt_partition_map_embed (struct grub_disk *disk, unsigned int *nsectors,
*nsectors = ctx.len;
if (*nsectors > max_nsectors)
*nsectors = max_nsectors;
*sectors = grub_malloc (*nsectors * sizeof (**sectors));
*sectors = grub_calloc (*nsectors, sizeof (**sectors));
if (!*sectors)
return grub_errno;
for (i = 0; i < *nsectors; i++)

2
grub-core/partmap/msdos.c
View file

@ -337,7 +337,7 @@ pc_partition_map_embed (struct grub_disk *disk, unsigned int *nsectors,
avail_nsectors = *nsectors;
if (*nsectors > max_nsectors)
*nsectors = max_nsectors;
*sectors = grub_malloc (*nsectors * sizeof (**sectors));
*sectors = grub_calloc (*nsectors, sizeof (**sectors));
if (!*sectors)
return grub_errno;
for (i = 0; i < *nsectors; i++)