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Christoph Probst c71309f3fe cifs: fix strcat buffer overflow and reduce raciness in smb21_set_oplock_level() 
commit 6a54b2e002c9d00b398d35724c79f9fe0d9b38fb upstream.

Change strcat to strncpy in the "None" case to fix a buffer overflow
when cinode->oplock is reset to 0 by another thread accessing the same
cinode. It is never valid to append "None" to any other message.

Consolidate multiple writes to cinode->oplock to reduce raciness.

Signed-off-by: Christoph Probst <kernel@probst.it>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-25 18:25:19 +02:00
..
9p
9p locks: add mount option for lock retry interval
2019-04-20 09:15:04 +02:00
adfs
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
affs
affs_lookup(): close a race with affs_remove_link()
2018-05-30 07:51:47 +02:00
afs
afs: Fix directory permissions check
2018-07-08 15:30:51 +02:00
autofs4
autofs: fix error return in autofs_fill_super()
2019-03-13 14:03:19 -07:00
befs
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
bfs
bfs: add sanity check at bfs_fill_super()
2018-12-01 09:42:51 +01:00
btrfs
Btrfs: do not start a transaction at iterate_extent_inodes()
2019-05-21 18:50:18 +02:00
cachefiles
fscache, cachefiles: remove redundant variable 'cache'
2018-12-17 09:28:53 +01:00
ceph
ceph: fix use-after-free on symlink traversal
2019-05-04 09:15:22 +02:00
cifs
cifs: fix strcat buffer overflow and reduce raciness in smb21_set_oplock_level()
2019-05-25 18:25:19 +02:00
coda
coda: fix 'kernel memory exposure attempt' in fsync
2017-11-24 08:37:05 +01:00
configfs
configfs: replace strncpy with memcpy
2018-11-21 09:24:15 +01:00
cramfs
Cramfs: fix abad comparison when wrap-arounds occur
2018-11-13 11:15:12 -08:00
crypto
fscrypt: use unbound workqueue for decryption
2018-08-03 07:50:32 +02:00
debugfs
debugfs: fix use-after-free on symlink traversal
2019-05-08 07:20:49 +02:00
devpts
fs/devpts: always delete dcache dentry-s in dput()
2019-03-23 14:35:21 +01:00
dlm
dlm: Don't swamp the CPU with callbacks queued during recovery
2019-02-12 19:45:57 +01:00
ecryptfs
eCryptfs: don't pass up plaintext names when using filename encryption
2018-06-21 04:02:42 +09:00
efivarfs
…
efs
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
exofs
fs/exofs: fix potential memory leak in mount option parsing
2018-11-27 16:10:47 +01:00
exportfs
exportfs: do not read dentry after free
2018-12-17 09:28:50 +01:00
ext2
ext2: Fix underflow in ext2_max_size()
2019-03-23 14:35:23 +01:00
ext4
ext4: fix compile error when using BUFFER_TRACE
2019-05-21 18:50:21 +02:00
f2fs
f2fs: fix to do sanity check with current segment number
2019-04-20 09:15:04 +02:00
fat
fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters()
2018-11-04 14:52:47 +01:00
freevxfs
…
fscache
fscache: fix race between enablement and dropping of object
2018-12-17 09:28:53 +01:00
fuse
fuse: fix possibly missed wake-up after abort
2019-05-16 19:42:26 +02:00
gfs2
gfs2: Fix missed wakeups in find_insert_glock
2019-03-13 14:03:23 -07:00
hfs
hfs: do not free node before using
2018-12-17 09:28:54 +01:00
hfsplus
hfsplus: do not free node before using
2018-12-17 09:28:54 +01:00
hostfs
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
hpfs
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
hugetlbfs
hugetlbfs: fix memory leak for resv_map
2019-05-08 07:20:50 +02:00
isofs
isofs: reject hardware sector size > 2048 bytes
2018-10-03 17:00:57 -07:00
jbd2
jbd2: check superblock mapped prior to committing
2019-05-21 18:50:18 +02:00
jffs2
jffs2: fix use-after-free on symlink traversal
2019-05-08 07:20:49 +02:00
jfs
jfs: Fix inconsistency between memory allocation and ea_buf->max_size
2018-08-09 12:16:39 +02:00
kernfs
kernfs: fix barrier usage in __kernfs_new_node()
2019-05-16 19:42:19 +02:00
lockd
lockd: Show pid of lockd for remote locks
2019-01-13 10:01:06 +01:00
minix
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ncpfs
staging: ncpfs: memory corruption in ncp_read_kernel()
2018-03-28 18:24:43 +02:00
nfs
NFS: Fix a typo in nfs_init_timeout_values()
2019-05-04 09:15:21 +02:00
nfs_common
lockd: fix "list_add double add" caused by legacy signal interface
2018-02-03 17:39:08 +01:00
nfsd
nfsd: Don't release the callback slot unless it was actually held
2019-05-02 09:40:29 +02:00
nilfs2
do d_instantiate/unlock_new_inode combinations safely
2018-05-30 07:51:47 +02:00
nls
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
notify
fanotify: fix handling of events on child sub-directory
2019-02-06 17:31:37 +01:00
ntfs
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ocfs2
ocfs2: fix ocfs2 read inode data panic in ocfs2_iget
2019-05-21 18:50:17 +02:00
omfs
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
openpromfs
…
orangefs
orangefs: report attributes_mask and attributes for statx
2018-06-26 08:06:33 +08:00
overlayfs
ovl: check whiteout in ovl_create_over_whiteout()
2018-11-21 09:24:17 +01:00
proc
fs/proc/proc_sysctl.c: Fix a NULL pointer dereference
2019-05-02 09:40:31 +02:00
pstore
pstore/ram: Do not treat empty buffers as valid
2019-01-26 09:37:02 +01:00
qnx4
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
qnx6
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
quota
quota: Lock s_umount in exclusive mode for Q_XQUOTA{ON,OFF} quotactls.
2019-01-26 09:37:05 +01:00
ramfs
mm: make pagevec_lookup() update index
2017-09-06 17:27:26 -07:00
reiserfs
reiserfs: propagate errors from fill_with_dentries() properly
2018-11-27 16:10:46 +01:00
romfs
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
squashfs
Squashfs: Compute expected length from inode size rather than block length
2018-09-05 09:26:32 +02:00
sysfs
scsi: sysfs: Introduce sysfs_{un,}break_active_protection()
2018-09-05 09:26:41 +02:00
sysv
sysv: return 'err' instead of 0 in __sysv_write_inode
2018-12-17 09:28:48 +01:00
tracefs
…
ubifs
ubifs: Handle re-linking of inodes correctly while recovery
2018-12-29 13:39:11 +01:00
udf
udf: Fix crash on IO error during truncate
2019-03-27 14:13:52 +09:00
ufs
do d_instantiate/unlock_new_inode combinations safely
2018-05-30 07:51:47 +02:00
xfs
xfs: hold xfs_buf locked between shortform->leaf conversion and the addition of an attribute
2019-04-27 09:35:41 +02:00
aio.c
aio: fix spectre gadget in lookup_ioctx
2018-12-21 14:13:04 +01:00
anon_inodes.c
…
attr.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
bad_inode.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
binfmt_aout.c
fs: fix kernel_read prototype
2017-09-04 19:05:15 -04:00
binfmt_elf_fdpic.c
Merge branch 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-09-14 18:13:32 -07:00
binfmt_elf.c
binfmt_elf: Respect error return from `regset->active'
2018-09-26 08:38:09 +02:00
binfmt_em86.c
…
binfmt_flat.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
binfmt_misc.c
fs/binfmt_misc.c: do not allow offset overflow
2018-06-26 08:06:33 +08:00
binfmt_script.c
Revert "exec: load_script: don't blindly truncate shebang string"
2019-02-15 09:08:56 +01:00
block_dev.c
block: fix the return errno for direct IO
2019-04-17 08:37:53 +02:00
buffer.c
fs: fix guard_bio_eod to check for real EOD errors
2019-04-05 22:31:28 +02:00
char_dev.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_binfmt_elf.c
…
compat_ioctl.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat.c
…
coredump.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
dax.c
fs/dax.c: release PMD lock even when there is no PMD support in DAX
2018-04-26 11:02:14 +02:00
dcache.c
fs/dcache: Fix incorrect nr_dentry_unused accounting in shrink_dcache_sb()
2019-02-06 17:31:34 +01:00
dcookies.c
…
direct-io.c
iomap: report collisions between directio and buffered writes to userspace
2019-04-27 09:35:41 +02:00
drop_caches.c
fs/drop_caches.c: avoid softlockups in drop_pagecache_sb()
2019-03-13 14:03:18 -07:00
eventfd.c
…
eventpoll.c
fs/epoll: drop ovflist branch prediction
2019-02-12 19:46:10 +01:00
exec.c
exec: Fix mem leak in kernel_read_file
2019-03-13 14:03:11 -07:00
fcntl.c
fcntl: don't cap l_start and l_end values for F_GETLK64 in compat syscall
2017-12-17 15:07:59 +01:00
fhandle.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
file_table.c
fput: Don't reinvent the wheel but use existing llist API
2017-08-28 00:50:23 -04:00
file.c
fs/file.c: initialize init_files.resize_wait
2019-04-05 22:31:28 +02:00
filesystems.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fs_pin.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fs_struct.c
…
fs-writeback.c
fs/writeback.c: use rcu_barrier() to wait for inflight wb switches going into workqueue when umount
2019-05-21 18:50:20 +02:00
inode.c
Fix up non-directory creation in SGID directories
2018-07-17 11:39:27 +02:00
internal.h
Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
2017-09-13 09:11:44 -07:00
ioctl.c
vfs: swap names of {do,vfs}_clone_file_range()
2018-11-10 07:48:33 -08:00
iomap.c
iomap: report collisions between directio and buffered writes to userspace
2019-04-27 09:35:41 +02:00
Kconfig
…
Kconfig.binfmt
…
libfs.c
…
locks.c
fs/lock: skip lock owner pid translation in case we are in init_pid_ns
2018-10-03 17:00:53 -07:00
Makefile
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mbcache.c
mbcache: initialize entry->e_referenced in mb_cache_entry_create()
2018-02-22 15:42:25 +01:00
mount.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mpage.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
namei.c
namei: allow restricted O_CREAT of FIFOs and regular files
2018-12-01 09:42:59 +01:00
namespace.c
mount: Prevent MNT_DETACH from disconnecting locked mounts
2018-11-21 09:24:14 +01:00
no-block.c
…
nsfs.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
open.c
fs/open.c: allow opening only regular files during execve()
2019-04-03 06:25:17 +02:00
pipe.c
fs: prevent page refcount overflow in pipe_buf_get
2019-05-04 09:15:18 +02:00
pnode.c
…
pnode.h
…
posix_acl.c
…
proc_namespace.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
read_write.c
vfs: fix preadv64v2 and pwritev64v2 compat syscalls with offset == -1
2019-04-05 22:31:33 +02:00
readdir.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
select.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
seq_file.c
seq_file: fix incomplete reset on read from zero offset
2018-02-22 15:42:28 +01:00
signalfd.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
splice.c
fs: prevent page refcount overflow in pipe_buf_get
2019-05-04 09:15:18 +02:00
stack.c
…
stat.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
statfs.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
super.c
fs: don't scan the inode cache before SB_BORN is set
2018-05-30 07:51:47 +02:00
sync.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
timerfd.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
userfaultfd.c
coredump: fix race condition between mmget_not_zero()/get_task_mm() and core dumping
2019-04-27 09:35:37 +02:00
utimes.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
sysfs: Do not return POSIX ACL xattrs via listxattr
2018-10-10 08:54:27 +02:00