leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity
64d4ce8923
linux/fs/ext4
History
Jan Kara 64d4ce8923 ext4: fix ext4_empty_dir() for directories with holes 
Function ext4_empty_dir() doesn't correctly handle directories with
holes and crashes on bh->b_data dereference when bh is NULL. Reorganize
the loop to use 'offset' variable all the times instead of comparing
pointers to current direntry with bh->b_data pointer. Also add more
strict checking of '.' and '..' directory entries to avoid entering loop
in possibly invalid state on corrupted filesystems.

References: CVE-2019-19037
CC: stable@vger.kernel.org
Fixes: 4e19d6b65f ("ext4: allow directory holes")
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20191202170213.4761-2-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2019-12-14 17:22:45 -05:00
..
acl.c ext4: compare old and new mode before setting update_mode flag 2018-12-10 00:22:38 -05:00
acl.h ext4: fix up remaining files with SPDX cleanups 2017-12-17 22:00:59 -05:00
balloc.c ext4: clean up kerneldoc warnigns when building with W=1 2019-06-19 16:30:03 -04:00
bitmap.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
block_validity.c ext4: fix potential use after free after remounting with noblock_validity 2019-08-28 11:13:24 -04:00
dir.c ext4: fix kernel oops caused by spurious casefold flag 2019-09-03 01:43:17 -04:00
ext4_extents.h ext4: adjust reserved cluster count when removing extents 2018-10-01 14:25:08 -04:00
ext4_jbd2.c ext4: Reserve revoke credits for freed blocks 2019-11-05 16:00:49 -05:00
ext4_jbd2.h ext4: Reserve revoke credits for freed blocks 2019-11-05 16:00:49 -05:00
ext4.h Merge branch 'mb/dio' into master 2019-11-05 16:21:09 -05:00
extents_status.c ext4: use percpu_counters for extent_status cache hits/misses 2019-08-28 11:19:23 -04:00
extents_status.h ext4: use percpu_counters for extent_status cache hits/misses 2019-08-28 11:19:23 -04:00
extents.c Merge branch 'mb/dio' into master 2019-11-05 16:21:09 -05:00
file.c ext4: introduce direct I/O write using iomap infrastructure 2019-11-05 15:53:28 -05:00
fsmap.c ext4: fix miscellaneous sparse warnings 2019-05-12 04:49:47 -04:00
fsmap.h ext4: fix up remaining files with SPDX cleanups 2017-12-17 22:00:59 -05:00
fsync.c ext4: update ext4_sync_file() to not use __generic_file_fsync() 2019-11-05 11:31:40 -05:00
hash.c ext4: fix kernel oops caused by spurious casefold flag 2019-09-03 01:43:17 -04:00
ialloc.c ext4: fix leak of quota reservations 2019-11-14 19:25:47 -05:00
indirect.c ext4: Reserve revoke credits for freed blocks 2019-11-05 16:00:49 -05:00
inline.c ext4: set error return correctly when ext4_htree_store_dirent fails 2019-08-12 14:29:38 -04:00
inode.c Merge branch 'tt/misc' into dev 2019-11-19 12:25:42 -05:00
ioctl.c Added new ext4 debugging ioctls to allow userspace to get information 2019-09-21 13:37:39 -07:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile ext4: add basic fs-verity support 2019-08-12 19:33:50 -07:00
mballoc.c ext4: clean up kerneldoc warnigns when building with W=1 2019-06-19 16:30:03 -04:00
mballoc.h ext4: fix up remaining files with SPDX cleanups 2017-12-17 22:00:59 -05:00
migrate.c ext4: Reserve revoke credits for freed blocks 2019-11-05 16:00:49 -05:00
mmp.c ext4: don't mark mmp buffer head dirty 2018-09-15 17:11:25 -04:00
move_extent.c ext4: use jbd2_inode dirty range scoping 2019-06-20 17:26:26 -04:00
namei.c ext4: fix ext4_empty_dir() for directories with holes 2019-12-14 17:22:45 -05:00
page-io.c ext4: bio_alloc with __GFP_DIRECT_RECLAIM never fails 2019-11-14 22:19:11 -05:00
readpage.c ext4: bio_alloc with __GFP_DIRECT_RECLAIM never fails 2019-11-14 22:19:11 -05:00
resize.c ext4: Reserve revoke credits for freed blocks 2019-11-05 16:00:49 -05:00
super.c Merge branch 'tt/misc' into dev 2019-11-19 12:25:42 -05:00
symlink.c ext4: switch to fscrypt_get_symlink() 2018-01-11 22:10:40 -05:00
sysfs.c ext4: add basic fs-verity support 2019-08-12 19:33:50 -07:00
truncate.h ext4: handle layout changes to pinned DAX mappings 2018-07-29 17:00:22 -04:00
verity.c ext4: add basic fs-verity support 2019-08-12 19:33:50 -07:00
xattr_security.c ext4: use XATTR_CREATE in ext4_initxattrs() 2018-05-10 11:52:14 -04:00
xattr_trusted.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xattr_user.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xattr.c ext4: Reserve revoke credits for freed blocks 2019-11-05 16:00:49 -05:00
xattr.h ext4: add extra checks to ext4_xattr_block_get() 2018-03-30 20:04:11 -04:00