From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-Id: <20120205220950.259230674@pcw.home.local> Date: Sun, 05 Feb 2012 23:10:08 +0100 From: Willy Tarreau To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Timo Warns , Linus Torvalds , Greg KH Subject: [PATCH 19/91] Validate size of EFI GUID partition entries. In-Reply-To: <0635750f5f06ed2ca212b91fcb5c4483@local> Sender: linux-kernel-owner@vger.kernel.org List-ID: 2.6.27-longterm review patch. If anyone has any objections, please let us know. ------------------ commit fa039d5f6b126fbd65eefa05db2f67e44df8f121 upstream. Otherwise corrupted EFI partition tables can cause total confusion. Signed-off-by: Timo Warns Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- fs/partitions/efi.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) Index: longterm-2.6.27/fs/partitions/efi.c =================================================================== --- longterm-2.6.27.orig/fs/partitions/efi.c 2012-02-05 22:34:34.453915054 +0100 +++ longterm-2.6.27/fs/partitions/efi.c 2012-02-05 22:34:37.590915121 +0100 @@ -343,6 +343,12 @@ 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;