fly316/PX4-Autopilot
7
0
Fork 0
mirror of https://gitee.com/mirrors_PX4/PX4-Autopilot.git synced 2026-04-14 10:07:39 +08:00
Code Issues Packages Projects Releases Wiki Activity

Fix case were descriptor has no or bad length

Browse Source
This commit is contained in:
David Sidrane 2021-01-29 09:27:42 -08:00 committed by Daniel Agar
parent 5c80b2d3dd
commit 6ea06892ac
1 changed files with 9 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
platforms/nuttx/src/canbootloader/uavcan/main.c
View File

@ -362,7 +362,14 @@ static bool is_app_valid(uint32_t first_word)
length = bootloader.fw_image_descriptor->image_size;
if (length > APPLICATION_SIZE) {
if (length > APPLICATION_SIZE || length == 0) {
return false;
}
size_t block2_len = bootloader.fw_image_descriptor->image_size - ((size_t)&bootloader.fw_image_descriptor->major_version
- (size_t)bootloader.fw_image);
if (block2_len > APPLICATION_SIZE || block2_len == 0) {
return false;
}
@ -370,9 +377,7 @@ static bool is_app_valid(uint32_t first_word)
block_crc1 = crc32_signature(block_crc1, (size_t)(&bootloader.fw_image_descriptor->crc32_block1) -
(size_t)(bootloader.fw_image + 1), (const uint8_t *)(bootloader.fw_image + 1));
block_crc2 = crc32_signature(0,
(size_t) bootloader.fw_image_descriptor->image_size - ((size_t)&bootloader.fw_image_descriptor->major_version
- (size_t)bootloader.fw_image),
block_crc2 = crc32_signature(0, block2_len,
(const uint8_t *) &bootloader.fw_image_descriptor->major_version);
#if defined(DEBUG_APPLICATION_INPLACE)