diff options
| -rw-r--r-- | util/cbfstool/fit.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/util/cbfstool/fit.c b/util/cbfstool/fit.c index 12a7e3b49f..02cfaee21d 100644 --- a/util/cbfstool/fit.c +++ b/util/cbfstool/fit.c @@ -206,6 +206,10 @@ static int parse_microcode_blob(struct cbfs_image *image, mcu_header = rom_buffer_pointer(image, current_offset); + /* Quickly sanity check a prospective microcode update. */ + if (mcu_header->total_size < sizeof(*mcu_header)) + break; + /* FIXME: Should the checksum be validated? */ mcus[num_mcus].offset = current_offset; mcus[num_mcus].size = mcu_header->total_size; @@ -215,10 +219,6 @@ static int parse_microcode_blob(struct cbfs_image *image, num_mcus++; file_length -= mcus[num_mcus].size; - /* Can't determine any more entries. */ - if (!mcu_header->total_size) - break; - /* Reached limit of FIT entries. */ if (num_mcus == *total_mcus) break; |