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Fix collision in delete_object (same ids, different types)
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danielinux committed Aug 10, 2024
1 parent 6b6772f commit 997847b
Showing 1 changed file with 4 additions and 3 deletions.
7 changes: 4 additions & 3 deletions src/pkcs11_store.c
Original file line number Diff line number Diff line change
Expand Up @@ -213,14 +213,15 @@ static void check_vault(void) {
}
}

static void delete_object(uint32_t tok_id, uint32_t obj_id)
static void delete_object(int32_t type, uint32_t tok_id, uint32_t obj_id)
{
struct obj_hdr *hdr = (struct obj_hdr *)cached_sector;
check_vault();
memcpy(cached_sector, vault_base, WOLFBOOT_SECTOR_SIZE);

while ((uintptr_t)hdr < ((uintptr_t)cached_sector + WOLFBOOT_SECTOR_SIZE)) {
if ((hdr->token_id == tok_id) && (hdr->object_id == obj_id)) {
if ((hdr->token_id == tok_id) && (hdr->object_id == obj_id) &&
(hdr->type == type)) {
hdr->token_id = PKCS11_INVALID_ID;
hdr->object_id = PKCS11_INVALID_ID;
bitmap_put(hdr->pos, 0);
Expand Down Expand Up @@ -255,7 +256,7 @@ static uint8_t *find_object_buffer(int32_t type, uint32_t tok_id, uint32_t obj_i
/* Found backup! restoring... */
restore_backup(sector_base);
} else {
delete_object(tok_id, obj_id);
delete_object(type, tok_id, obj_id);
return NULL; /* Cannot recover object payload */
}
}
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