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The first four patches move index validation closer to the point where index metadata is read and tighten the structural checks for both $INDEX_ROOT and INDX block headers. The last patch adds a missing bounds check before accessing fields in an EA entry. To: Namjae Jeon Cc: linux-fsdevel@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: charsyam@gmail.com Signed-off-by: Hyunchul Lee Hyunchul Lee (4): ntfs: validate index block header more strictly ntfs: centalize $INDEX_ROOT header validation ntfs: validate index entries on reading ntfs: add bounds check before accessing EA entries --- Changes in v2: - Added a Tested-by tag. - Addressed comments by DeaMyung Kang. * Patch 1: Moved changes to make make ntfs_index_block_inconsistent() return -EIO from patch 3. * Patch 1: Made ntfs_index_header_inconsistent() verify the remaining space before accessing index_header fields. * Patch 4: Removed a redundant pre-loop check. fs/ntfs/dir.c | 64 +++------------- fs/ntfs/ea.c | 16 ++-- fs/ntfs/index.c | 197 ++++++++++++++++++++++++++++++++---------------- fs/ntfs/index.h | 12 ++- fs/ntfs/inode.c | 15 ++-- 5 files changed, 165 insertions(+), 139 deletions(-) -- 2.43.0