[PATCH 1/5] ext4: avoid declaring fs inconsistent due to invalid file handles This patch is backported as functionality in this commit is used by Patch 2 in this patchset. [PATCH 2/5] ext4: protect journal inode's blocks using block_validity Backport to 4.14 [PATCH 3/5] ext4: don't perform block validity checks on the journal [PATCH 4/5] ext4: fix block validity checks for journal inodes using [PATCH 5/5] ext4: unsigned int compared against zero Fixes issues found in Patch 2 in this patchset. These patches addresses CVE-2019-19319 Colin Ian King (1): ext4: unsigned int compared against zero Theodore Ts'o (4): ext4: avoid declaring fs inconsistent due to invalid file handles ext4: protect journal inode's blocks using block_validity ext4: don't perform block validity checks on the journal inode ext4: fix block validity checks for journal inodes using indirect blocks fs/ext4/block_validity.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++ fs/ext4/ext4.h | 15 ++++++++++++-- fs/ext4/extents.c | 12 +++++++---- fs/ext4/ialloc.c | 2 +- fs/ext4/inode.c | 53 +++++++++++++++++++++++++++++++++-------------- fs/ext4/ioctl.c | 2 +- fs/ext4/namei.c | 4 ++-- fs/ext4/resize.c | 5 +++-- fs/ext4/super.c | 19 +++++------------ fs/ext4/xattr.c | 5 +++-- 10 files changed, 128 insertions(+), 43 deletions(-) -- 2.7.4