diff options
| author | Timo Warns <Warns@pre-sense.de> | 2011-05-06 13:47:35 +0200 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2012-03-14 10:57:55 -0400 |
| commit | ef587df573ad04e0ac03bc80ce1231cbcc2f3a64 (patch) | |
| tree | 4a8f4488a09feb935b2a50cda7485c75fb4d8b08 | |
| parent | 6c245ccf08985a986f358dfc9fa8964756843072 (diff) | |
Validate size of EFI GUID partition entries.
commit fa039d5f6b126fbd65eefa05db2f67e44df8f121 upstream.
Otherwise corrupted EFI partition tables can cause total confusion.
Signed-off-by: Timo Warns <warns@pre-sense.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
| -rw-r--r-- | fs/partitions/efi.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/partitions/efi.c b/fs/partitions/efi.c index 91babdae7587..ee59684b3694 100644 --- a/fs/partitions/efi.c +++ b/fs/partitions/efi.c @@ -350,6 +350,12 @@ is_gpt_valid(struct block_device *bdev, u64 lba, goto fail; } + /* Check that sizeof_partition_entry has the correct value */ + if (le32_to_cpu((*gpt)->sizeof_partition_entry) != sizeof(gpt_entry)) { + pr_debug("GUID Partitition Entry Size check failed.\n"); + goto fail; + } + if (!(*ptes = alloc_read_gpt_entries(bdev, *gpt))) goto fail; |