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;