Eric Biggers e5a2a002f8 ext4: prevent creating duplicate encrypted filenames ... commit 75d18cd186 upstream. As described in "fscrypt: add fscrypt_is_nokey_name()", it's possible to create a duplicate filename in an encrypted directory by creating a file concurrently with adding the directory's encryption key. Fix this bug on ext4 by rejecting no-key dentries in ext4_add_entry(). Note that the duplicate check in ext4_find_dest_de() sometimes prevented this bug. However in many cases it didn't, since ext4_find_dest_de() doesn't examine every dentry. Fixes: 4461471107 ("ext4 crypto: enable filename encryption") Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20201118075609.120337-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-12-26 16:02:44 +01:00
..
acl.c	ext4: main fast-commit commit path	2020-10-21 23:22:37 -04:00
acl.h	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
balloc.c	ext4: fast commit recovery path	2020-10-21 23:22:38 -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: rename system_blks to s_system_blks inside ext4_sb_info	2020-10-18 10:36:59 -04:00
dir.c	ext4: use generic casefolding support	2020-10-28 13:43:13 -04:00
ext4.h	ext4: fix bogus warning in ext4_update_dx_flag()	2020-11-19 22:41:10 -05:00
ext4_extents.h	ext4: fix EXT_MAX_EXTENT/INDEX to check for zeroed eh_max	2020-06-03 23:16:49 -04:00
ext4_jbd2.c	ext4: fast commit recovery path	2020-10-21 23:22:38 -04:00
ext4_jbd2.h	ext4: drop ext4_journal_free_reserved()	2020-06-03 23:16:53 -04:00
extents.c	ext4: fixup ext4_fc_track_* functions' signature	2020-11-06 23:01:02 -05:00
extents_status.c	ext4: fast commit recovery path	2020-10-21 23:22:38 -04:00
extents_status.h	ext4: fix extent_status trace points	2020-01-25 02:03:03 -05:00
fast_commit.c	ext4: fix sparse warnings in fast_commit code	2020-11-07 00:08:23 -05:00
fast_commit.h	ext4: disable fast commit with data journalling	2020-11-06 23:01:05 -05:00
file.c	ext4: make s_mount_flags modifications atomic	2020-11-06 23:01:05 -05:00
fsmap.c	jbd2: rename j_maxlen to j_total_len and add jbd2_journal_max_txn_bufs	2020-11-06 23:01:02 -05:00
fsmap.h	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
fsync.c	ext4: make s_mount_flags modifications atomic	2020-11-06 23:01:05 -05:00
hash.c	ext4: use generic casefolding support	2020-10-28 13:43:13 -04:00
ialloc.c	The siginificant new ext4 feature this time around is Harshad's new	2020-10-22 10:31:08 -07:00
indirect.c	ext4: use ext4_sb_bread() instead of sb_bread()	2020-10-18 10:37:14 -04:00
inline.c	ext4: unlock xattr_sem properly in ext4_inline_data_truncate()	2020-11-06 22:52:36 -05:00
inode-test.c	kunit: allow kunit tests to be loaded as a module	2020-01-09 16:42:29 -07:00
inode.c	ext4: make s_mount_flags modifications atomic	2020-11-06 23:01:05 -05:00
ioctl.c	ext4: fast commit recovery path	2020-10-21 23:22:38 -04:00
Kconfig	ext4: replace HTTP links with HTTPS ones	2020-08-06 01:01:57 -04:00
Makefile	ext4 / jbd2: add fast commit initialization	2020-10-21 23:22:26 -04:00
mballoc.c	ext4: make s_mount_flags modifications atomic	2020-11-06 23:01:05 -05:00
mballoc.h	ext4: limit the length of per-inode prealloc list	2020-08-19 12:04:36 -04:00
migrate.c	ext4: handle ext4_mark_inode_dirty errors	2020-06-03 23:16:50 -04:00
mmp.c	ext4: use common helpers in all places reading metadata buffers	2020-10-18 10:37:14 -04:00
move_extent.c	ext4: use common helpers in all places reading metadata buffers	2020-10-18 10:37:14 -04:00
namei.c	ext4: prevent creating duplicate encrypted filenames	2020-12-26 16:02:44 +01:00
page-io.c	ext4: add inline encryption support	2020-07-08 10:29:43 -07:00
readpage.c	Improvements to ext4's block allocator performance for very large file	2020-08-21 11:03:38 -07:00
resize.c	ext4: use ext4_sb_bread() instead of sb_bread()	2020-10-18 10:37:14 -04:00
super.c	ext4: drop fast_commit from /proc/mounts	2020-11-19 15:41:57 -05:00
symlink.c	ext4: switch to fscrypt_get_symlink()	2018-01-11 22:10:40 -05:00
sysfs.c	ext4: indicate that fast_commit is available via /sys/fs/ext4/feature/...	2020-10-28 13:43:22 -04:00
truncate.h	ext4: handle layout changes to pinned DAX mappings	2018-07-29 17:00:22 -04:00
verity.c	mm/readahead: make page_cache_ra_unbounded take a readahead_control	2020-10-16 11:11:16 -07:00
xattr.c	ext4: main fast-commit commit path	2020-10-21 23:22:37 -04:00
xattr.h	ext4: support xattr gnu.* namespace for the Hurd	2020-06-12 13:23:34 -04:00
xattr_hurd.c	ext4: support xattr gnu.* namespace for the Hurd	2020-06-12 13:23:34 -04:00
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