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Al Viro c3c7cfbe97 ecryptfs_lookup_interpose(): lower_dentry->d_inode is not stable 
commit e72b9dd6a5f17d0fb51f16f8685f3004361e83d0 upstream.

lower_dentry can't go from positive to negative (we have it pinned),
but it *can* go from negative to positive.  So fetching ->d_inode
into a local variable, doing a blocking allocation, checking that
now ->d_inode is non-NULL and feeding the value we'd fetched
earlier to a function that won't accept NULL is not a good idea.

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-25 15:53:42 +01:00
..
9p
9p: avoid attaching writeback_fid on mmap with type PRIVATE
2019-10-17 13:40:54 -07:00
adfs
fs/adfs: super: fix use-after-free bug
2019-08-06 18:28:26 +02:00
affs
affs_lookup(): close a race with affs_remove_link()
2018-05-30 07:48:51 +02:00
afs
afs: Fix afs_kill_pages()
2017-12-20 10:04:56 +01:00
autofs4
autofs: fix error return in autofs_fill_super()
2019-03-23 08:44:27 +01:00
befs
…
bfs
bfs: add sanity check at bfs_fill_super()
2018-12-01 09:46:33 +01:00
btrfs
btrfs: block-group: Fix a memory leak due to missing btrfs_put_block_group()
2019-10-29 09:13:30 +01:00
cachefiles
fscache, cachefiles: remove redundant variable 'cache'
2018-12-17 21:55:12 +01:00
ceph
ceph: fix use-after-free in __ceph_remove_cap()
2019-11-12 19:13:20 +01:00
cifs
cifs: Fix cifsInodeInfo lock_sem deadlock when reconnect occurs
2019-11-10 11:21:10 +01:00
coda
coda: add error handling for fget
2019-08-06 18:28:27 +02:00
configfs
configfs: fix a deadlock in configfs_symlink()
2019-11-12 19:13:24 +01:00
cramfs
Cramfs: fix abad comparison when wrap-arounds occur
2018-11-21 09:27:37 +01:00
debugfs
debugfs: fix use-after-free on symlink traversal
2019-05-16 19:45:01 +02:00
devpts
devpts: clean up interface to pty drivers
2016-08-16 09:30:49 +02:00
dlm
dlm: Don't swamp the CPU with callbacks queued during recovery
2019-02-20 10:13:04 +01:00
ecryptfs
ecryptfs_lookup_interpose(): lower_dentry->d_inode is not stable
2019-11-25 15:53:42 +01:00
efivarfs
efi: Make efivarfs entries immutable by default
2016-03-03 15:07:09 -08:00
efs
…
exofs
fs/exofs: fix potential memory leak in mount option parsing
2018-11-27 16:08:00 +01:00
exportfs
exportfs: do not read dentry after free
2018-12-17 21:55:10 +01:00
ext2
ext2: Fix underflow in ext2_max_size()
2019-03-23 08:44:36 +01:00
ext4
ext4: fix punch hole for inline_data file systems
2019-10-05 12:27:54 +02:00
f2fs
f2fs: fix to do sanity check on segment bitmap of LFS curseg
2019-10-05 12:27:40 +02:00
fat
fat: work around race with userspace's read via blockdev while mounting
2019-10-07 21:01:02 +02:00
freevxfs
…
fscache
fscache: fix race between enablement and dropping of object
2018-12-17 21:55:11 +01:00
fuse
fuse: truncate pending writes on O_TRUNC
2019-11-06 12:09:18 +01:00
gfs2
GFS2: don't set rgrp gl_object until it's inserted into rgrp tree
2019-09-06 10:18:11 +02:00
hfs
hfs: do not free node before using
2018-12-17 21:55:12 +01:00
hfsplus
hfsplus: do not free node before using
2018-12-17 21:55:12 +01:00
hostfs
hostfs: Freeing an ERR_PTR in hostfs_fill_sb_common()
2016-09-30 10:18:39 +02:00
hpfs
hpfs: implement the show_options method
2016-06-01 12:15:54 -07:00
hugetlbfs
hugetlb: use same fault hash key for shared and private mappings
2019-06-11 12:23:52 +02:00
isofs
isofs: fix timestamps beyond 2027
2017-11-30 08:37:20 +00:00
jbd2
jbd2: fix compile warning when using JBUFFER_TRACE
2019-03-23 08:44:37 +01:00
jffs2
jffs2: fix use-after-free on symlink traversal
2019-05-16 19:45:01 +02:00
jfs
jfs: Fix inconsistency between memory allocation and ea_buf->max_size
2018-08-09 12:19:28 +02:00
kernfs
kernfs: Replace strncpy with memcpy
2018-12-13 09:21:29 +01:00
lockd
lockd: fix access beyond unterminated strings in prints
2018-11-21 09:27:36 +01:00
logfs
mm, fs: introduce mapping_gfp_constraint()
2015-11-06 17:50:42 -08:00
minix
…
ncpfs
ncpfs: fix build warning of strncpy
2019-03-23 08:44:21 +01:00
nfs
NFSv4: Don't allow a cached open with a revoked delegation
2019-11-12 19:13:29 +01:00
nfs_common
lockd: fix "list_add double add" caused by legacy signal interface
2018-02-03 17:04:28 +01:00
nfsd
nfsd: Fix overflow causing non-working mounts on 1 TB machines
2019-08-04 09:34:55 +02:00
nilfs2
do d_instantiate/unlock_new_inode combinations safely
2018-05-30 07:48:52 +02:00
nls
…
notify
fanotify: fix logic of events on child
2018-04-24 09:32:11 +02:00
ntfs
mm, fs: introduce mapping_gfp_constraint()
2015-11-06 17:50:42 -08:00
ocfs2
fs: ocfs2: fix a possible null-pointer dereference in ocfs2_info_scan_inode_alloc()
2019-11-06 12:09:15 +01:00
omfs
…
openpromfs
…
overlayfs
ovl: filter of trusted xattr results in audit
2019-10-05 12:27:56 +02:00
proc
coredump: fix race condition between mmget_not_zero()/get_task_mm() and core dumping
2019-06-22 08:18:27 +02:00
pstore
pstore/ram: Do not treat empty buffers as valid
2019-01-26 09:42:53 +01:00
qnx4
…
qnx6
…
quota
fs/quota: Fix spectre gadget in do_quotactl
2018-09-09 20:04:36 +02:00
ramfs
mm, fs: obey gfp_mapping for add_to_page_cache()
2015-10-16 11:42:28 -07:00
reiserfs
reiserfs: propagate errors from fill_with_dentries() properly
2018-11-27 16:08:00 +01:00
romfs
romfs: use different way to generate fsid for BLOCK or MTD
2017-06-17 06:39:38 +02:00
squashfs
squashfs: more metadata hardenings
2018-08-06 16:24:42 +02:00
sysfs
scsi: sysfs: Introduce sysfs_{un,}break_active_protection()
2018-09-05 09:18:40 +02:00
sysv
sysv: return 'err' instead of 0 in __sysv_write_inode
2018-12-17 21:55:09 +01:00
tracefs
tracefs: Fix refcount imbalance in start_creating()
2015-11-04 22:13:45 -05:00
ubifs
ubifs: Check for name being NULL while mounting
2018-10-13 09:11:34 +02:00
udf
udf: Fix incorrect final NOT_ALLOCATED (hole) extent length
2019-07-21 09:07:08 +02:00
ufs
ufs: fix braino in ufs_get_inode_gid() for solaris UFS flavour
2019-06-11 12:23:49 +02:00
xfs
xfs: Correctly invert xfs_buftarg LRU isolation logic
2019-11-06 12:09:25 +01:00
aio.c
aio: fix spectre gadget in lookup_ioctx
2018-12-21 14:09:50 +01:00
anon_inodes.c
…
attr.c
vfs: move permission checking into notify_change() for utimes(NULL)
2016-10-22 12:26:56 +02:00
bad_inode.c
…
binfmt_aout.c
…
binfmt_elf_fdpic.c
libnvdimm for 4.4:
2015-11-10 12:07:22 -08:00
binfmt_elf.c
binfmt_elf: switch to new creds when switching to new mm
2019-04-27 09:33:53 +02:00
binfmt_em86.c
…
binfmt_flat.c
fs/binfmt_flat.c: make load_flat_shared_library() work
2019-07-10 09:56:30 +02:00
binfmt_misc.c
fs/binfmt_misc.c: do not allow offset overflow
2018-07-03 11:21:26 +02:00
binfmt_script.c
exec: load_script: Do not exec truncated interpreter path
2019-11-06 12:09:12 +01:00
block_dev.c
fs/block_dev: always invalidate cleancache in invalidate_bdev()
2017-05-20 14:27:01 +02:00
buffer.c
fs: fix guard_bio_eod to check for real EOD errors
2019-04-27 09:33:49 +02:00
char_dev.c
chardev: add additional check for minor range overlap
2019-06-11 12:24:03 +02:00
compat_binfmt_elf.c
binfmt_elf: compat: avoid unused function warning
2018-02-25 11:03:51 +01:00
compat_ioctl.c
compat_ioctl: pppoe: fix PPPOEIOCSFWD handling
2019-08-11 12:20:46 +02:00
compat.c
…
coredump.c
coredump: Ensure proper size of sparse core files
2017-07-05 14:37:20 +02:00
dax.c
dax: disable pmd mappings
2015-11-16 23:54:45 -08:00
dcache.c
fs/dcache: move security_d_instantiate() behind attaching dentry to inode
2019-11-10 11:21:39 +01:00
dcookies.c
…
direct-io.c
direct-io: Prevent NULL pointer access in submit_page_section
2017-10-18 09:20:42 +02:00
drop_caches.c
fs/drop_caches.c: avoid softlockups in drop_pagecache_sb()
2019-03-23 08:44:26 +01:00
eventfd.c
…
eventpoll.c
fs/epoll: drop ovflist branch prediction
2019-02-20 10:13:14 +01:00
exec.c
sched/fair: Don't free p->numa_faults with concurrent readers
2019-08-04 09:35:02 +02:00
fcntl.c
fs/fcntl: f_setown, avoid undefined behaviour
2018-01-31 12:06:11 +01:00
fhandle.c
fs/coredump: prevent fsuid=0 dumps into user-controlled directories
2016-04-12 09:08:58 -07:00
file_table.c
…
file.c
fs/file.c: initialize init_files.resize_wait
2019-04-27 09:33:49 +02:00
filesystems.c
…
fs_pin.c
…
fs_struct.c
…
fs-writeback.c
cgroup,writeback: don't switch wbs immediately on dead wbs if the memcg is dead
2019-11-12 19:13:31 +01:00
inode.c
Abort file_remove_privs() for non-reg. files
2019-06-22 08:18:27 +02:00
internal.h
…
ioctl.c
…
Kconfig
dax: disable pmd mappings
2015-11-16 23:54:45 -08:00
Kconfig.binfmt
…
libfs.c
…
locks.c
locks: don't check for race with close when setting OFD lock
2018-01-17 09:35:27 +01:00
Makefile
ext4: promote ext4 over ext2 in the default probe order
2015-10-15 10:33:21 -04:00
mbcache.c
…
mount.h
mnt: In propgate_umount handle visiting mounts in any order
2017-07-21 07:44:57 +02:00
mpage.c
fs: add i_blocksize()
2017-06-14 13:16:24 +02:00
namei.c
namei: allow restricted O_CREAT of FIFOs and regular files
2018-12-01 09:46:41 +01:00
namespace.c
mount: Prevent MNT_DETACH from disconnecting locked mounts
2018-11-21 09:27:44 +01:00
no-block.c
…
nsfs.c
nsfs: mark dentry with DCACHE_RCUACCESS
2018-02-16 20:09:43 +01:00
open.c
access: avoid the RCU grace period for the temporary subjective credentials
2019-08-04 09:35:01 +02:00
pipe.c
pipe: cap initial pipe capacity according to pipe-max-size limit
2018-05-26 08:48:51 +02:00
pnode.c
mnt: Make propagate_umount less slow for overlapping mount propagation trees
2017-07-21 07:44:58 +02:00
pnode.h
mnt: Add a per mount namespace limit on the number of mounts
2017-04-30 05:49:28 +02:00
posix_acl.c
tmpfs: clear S_ISGID when setting posix ACLs
2017-01-26 08:23:47 +01:00
proc_namespace.c
vfs: show_vfsstat: do not ignore errors from show_devname method
2016-04-12 09:08:55 -07:00
read_write.c
fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock
2019-06-11 12:24:13 +02:00
readdir.c
…
select.c
fs/select: add vmalloc fallback for select(2)
2018-01-31 12:06:09 +01:00
seq_file.c
Make file credentials available to the seqfile interfaces
2017-08-06 19:19:42 -07:00
signalfd.c
…
splice.c
vfs: fix uninitialized flags in splice_to_pipe()
2017-02-23 17:43:09 +01:00
stack.c
…
stat.c
ufs: restore maintaining ->i_blocks
2017-06-14 13:16:24 +02:00
statfs.c
…
super.c
fs: don't scan the inode cache before SB_BORN is set
2019-02-06 19:43:08 +01:00
sync.c
fs/sync.c: make sync_file_range(2) use WB_SYNC_NONE writeback
2015-11-06 17:50:42 -08:00
timerfd.c
timerfd: Protect the might cancel mechanism proper
2017-05-08 07:46:01 +02:00
userfaultfd.c
userfaultfd_release: always remove uffd flags and clear vm_userfaultfd_ctx
2019-09-06 10:18:09 +02:00
utimes.c
vfs: move permission checking into notify_change() for utimes(NULL)
2016-10-22 12:26:56 +02:00
xattr.c
getxattr: use correct xattr length
2018-09-09 20:04:36 +02:00