Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-14 00:47:26 +00:00
Code Issues Projects Releases Packages Wiki Activity

disk: Extend disk_blk_part_validate() with range checking

Browse source 
Check whether access is out of bounds of the partition and
return an error. This way there is no danger of esp. write
or erase outside of the confines of partition.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
This commit is contained in:
Marek Vasut 2023-08-14 01:46:45 +02:00 committed by Tom Rini
parent 2bc0dfef9f
commit bfd98b9a63
1 changed files with 8 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
disk/disk-uclass.c
View file

@ -27,9 +27,17 @@
*/
static int disk_blk_part_validate(struct udevice *dev, lbaint_t start, lbaint_t blkcnt)
{
struct disk_part *part = dev_get_uclass_plat(dev);
if (device_get_uclass_id(dev) != UCLASS_PARTITION)
return -ENOSYS;
if (start >= part->gpt_part_info.size)
return -E2BIG;
if ((start + blkcnt) > part->gpt_part_info.size)
return -ERANGE;
return 0;
}