commit: fa039d5f6b126fbd65eefa05db2f67e44df8f121 From: Timo Warns <[email protected]> Date: Fri, 6 May 2011 13:47:35 +0200 Subject: [PATCH] Validate size of EFI GUID partition entries.
Otherwise corrupted EFI partition tables can cause total confusion. Signed-off-by: Timo Warns <[email protected]> Cc: [email protected] Signed-off-by: Linus Torvalds <[email protected]> --- 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 ac0ccb5..19d6750 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; _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
