diff options
| author | Timo Warns <Warns@pre-sense.de> | 2011-05-06 13:47:35 +0200 |
|---|---|---|
| committer | Andy Green <andy.green@linaro.org> | 2011-05-31 11:01:40 +0100 |
| commit | db5319140624253ab9968ff5a3ef4e84d8a53ee4 (patch) | |
| tree | 8bd812f6ca21fb8ef143304b4e09f4a4b9e1b86c /fs | |
| parent | 1133b2b37ee2018f1de99b15f74f8bf06bf5f42b (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: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs')
| -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 ac0ccb5026a..19d6750d1d6 100644 --- a/fs/partitions/efi.c +++ b/fs/partitions/efi.c @@ -348,6 +348,12 @@ static int is_gpt_valid(struct parsed_partitions *state, 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(state, *gpt))) goto fail; |