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fix(bootloader_support): Fix overflowed constant in bootloader_sha256_flash_contents

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Konstantin Kondrashov 2024-11-28 16:39:48 +02:00 zatwierdzone przez BOT
rodzic 9d41a098d7
commit 5a245a389b
1 zmienionych plików z 10 dodań i 1 usunięć
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11
components/bootloader_support/src/bootloader_utility.c
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@ -1234,7 +1234,16 @@ esp_err_t bootloader_sha256_flash_contents(uint32_t flash_offset, uint32_t len,
while (len > 0) {
uint32_t mmu_page_offset = ((flash_offset & MMAP_ALIGNED_MASK) != 0) ? 1 : 0; /* Skip 1st MMU Page if it is already populated */
uint32_t partial_image_len = MIN(len, ((mmu_free_pages_count - mmu_page_offset) * SPI_FLASH_MMU_PAGE_SIZE)); /* Read the image that fits in the free MMU pages */
uint32_t max_pages = (mmu_free_pages_count > mmu_page_offset) ? (mmu_free_pages_count - mmu_page_offset) : 0;
if (max_pages == 0) {
ESP_LOGE(TAG, "No free MMU pages are available");
return ESP_ERR_NO_MEM;
}
uint32_t max_image_len;
if (__builtin_mul_overflow(max_pages, SPI_FLASH_MMU_PAGE_SIZE, &max_image_len)) {
max_image_len = UINT32_MAX;
}
uint32_t partial_image_len = MIN(len, max_image_len); /* Read the image that fits in the free MMU pages */
const void * image = bootloader_mmap(flash_offset, partial_image_len);
if (image == NULL) {