diff options
| -rw-r--r-- | fs/partitions/efi.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/partitions/efi.c b/fs/partitions/efi.c index 19d6750d1d6c..6296b403c67a 100644 --- a/fs/partitions/efi.c +++ b/fs/partitions/efi.c @@ -310,6 +310,15 @@ static int is_gpt_valid(struct parsed_partitions *state, u64 lba, goto fail; } + /* Check the GUID Partition Table header size */ + if (le32_to_cpu((*gpt)->header_size) > + bdev_logical_block_size(state->bdev)) { + pr_debug("GUID Partition Table Header size is wrong: %u > %u\n", + le32_to_cpu((*gpt)->header_size), + bdev_logical_block_size(state->bdev)); + goto fail; + } + /* Check the GUID Partition Table CRC */ origcrc = le32_to_cpu((*gpt)->header_crc32); (*gpt)->header_crc32 = 0; |