Paulo Alcantara cf4d358966 smb: client: fix uid/gid override in getattr with posix extensions ...

When mounting with 'multiuser,posix' options, cifs_getattr() overrides
the server-provided uid/gid with the current process's fsuid/fsgid.
This is because the condition only checks for unix extensions
(tcon->unix_ext) but not posix extensions (tcon->posix_extensions).

With SMB3 POSIX extensions, the server provides real uid/gid values
just like with unix extensions, so they should be preserved rather
than replaced with the caller's credentials.

Add a tcon->posix_extensions check to the condition so that uid/gid
from the server are properly reported in stat results.

Reported-by: Arthur Lesuisse <arthur.lesuisse@ulb.be>
Closes: https://lore.kernel.org/r/DB9P190MB2012266F6B8DECBE5D26A1798DB52@DB9P190MB2012.EURP190.PROD.OUTLOOK.COM
Suggested-by: Arthur Lesuisse <arthur.lesuisse@ulb.be>
Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Paulo Alcantara <pc@manguebit.org>
Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Cc: Shyam Prasad N <sprasad@microsoft.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Bharath SM <bharathsm@microsoft.com>
Cc: stable@vger.kernel.org

2026-09-08 11:29:10 -03:00

..

9p

Merge tag 'vfs-7.3-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 12:56:12 -07:00

adfs

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux

2026-04-25 07:44:26 -07:00

affs

Merge tag 'vfs-7.3-rc1.sync' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 14:21:00 -07:00

afs

Merge tag 'vfs-7.3-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 12:56:12 -07:00

autofs

autofs: drop redundant S_IFDIR from mkdir

2026-07-01 12:48:44 +02:00

befs

befs: handle set_blocksize failures

2026-05-21 13:39:35 +02:00

bfs

Merge tag 'vfs-7.3-rc1.sync' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 14:21:00 -07:00

btrfs

Merge tag 'for-7.3/block-20260819' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

2026-08-20 13:55:16 -07:00

cachefiles

cachefiles,netfs: sunset ondemand mode

2026-08-12 16:24:26 +02:00

ceph

Merge tag 'ceph-for-7.3-rc1' of https://github.com/ceph/ceph-client

2026-08-28 11:51:05 -07:00

coda

Merge tag 'vfs-7.3-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 12:56:12 -07:00

configfs

Merge tag 'pull-configfs-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2026-06-15 04:28:20 +05:30

cramfs

fs: add dedicated block device open helpers for filesystems

2026-06-29 10:31:52 +02:00

crypto

Merge tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/linux

2026-08-17 19:04:16 -07:00

debugfs

debugfs: warn if file creation failed due to uninitialized debugfs

2026-07-18 16:07:22 +02:00

devpts

…

dlm

dlm: init per node debugfs before add to node hash

2026-05-08 08:38:03 -05:00

ecryptfs

Merge tag 'ecryptfs-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs

2026-08-21 12:32:01 -07:00

efivarfs

Merge tag 'efi-next-for-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi

2026-08-23 09:24:34 -07:00

erofs

Merge tag 'erofs-for-7.3-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs

2026-08-25 12:27:41 -07:00

exfat

Merge tag 'exfat-for-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat

2026-08-22 08:57:28 -07:00

exportfs

find_acceptable_alias(): skip NORCU aliases with zero refcount

2026-06-05 00:34:55 -04:00

ext2

Merge tag 'fs_for_v7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

2026-08-20 12:52:35 -07:00

ext4

Merge tag 'ext4_for_linus-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

2026-08-20 13:17:11 -07:00

f2fs

Merge tag 'f2fs-for-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

2026-08-28 10:48:48 -07:00

fat

Merge tag 'mm-nonmm-stable-2026-08-22-16-57' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-08-23 08:07:11 -07:00

fuse

Merge tag 'fuse-update-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse

2026-08-25 07:59:44 -07:00

gfs2

Merge tag 'gfs2-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2

2026-08-17 17:03:34 -07:00

hfs

Merge tag 'hfs-v7.3-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/vdubeyko/hfs

2026-08-17 18:14:32 -07:00

hfsplus

Merge tag 'hfs-v7.3-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/vdubeyko/hfs

2026-08-17 18:14:32 -07:00

hostfs

Remove excl arg to ->create inode_operation

2026-07-31 10:18:30 +02:00

hpfs

Merge tag 'vfs-7.3-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 12:56:12 -07:00

hugetlbfs

Merge tag 'mm-stable-2026-08-18-18-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-08-20 18:17:08 -07:00

iomap

Merge tag 'for-7.3/block-20260819' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

2026-08-20 13:55:16 -07:00

isofs

isofs: Drop support of directory entries straddling blocks

2026-07-29 11:18:57 +02:00

jbd2

ext4: enable scoped NOFS when starting a handle in nojournal mode

2026-07-22 23:47:06 -04:00

jffs2

Merge tag 'vfs-7.3-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 12:56:12 -07:00

jfs

Merge tag 'vfs-7.3-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 12:56:12 -07:00

kernfs

kernfs: avoid iattr allocation in listxattr

2026-08-15 23:09:10 +02:00

lockd

Merge tag 'nfs-for-7.3-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

2026-08-26 15:09:21 -07:00

minix

Merge tag 'vfs-7.3-rc1.sync' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 14:21:00 -07:00

netfs

netfs: Fix folio_queue ENOMEM in writeback by adding a mempool

2026-07-28 15:42:31 +02:00

nfs

Merge tag 'mm-stable-2026-08-26-15-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-08-27 09:17:06 -07:00

nfs_common

NFS/localio: fix ref leak on nfs_uuid_add_file failure

2026-08-10 09:54:35 -04:00

nfsd

nfsd: export NFSv4 callback op stats via netlink

2026-08-10 09:54:35 -04:00

nilfs2

Merge tag 'nilfs2-v7.3-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/vdubeyko/nilfs2

2026-08-17 18:34:43 -07:00

nls

…

notify

fsnotify: Fix stale object mask after concurrent mark updates

2026-08-05 11:50:45 +02:00

ntfs

ntfs: support resident WOF decompression

2026-08-21 19:09:00 +09:00

ntfs3

Merge tag 'ntfs3_for_7.3' of https://github.com/Paragon-Software-Group/linux-ntfs3

2026-08-20 12:27:02 -07:00

ocfs2

Merge tag 'mm-nonmm-stable-2026-08-22-16-57' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-08-23 08:07:11 -07:00

omfs

Merge tag 'vfs-7.3-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 12:56:12 -07:00

openpromfs

…

orangefs

Merge tag 'for-linus-7.3-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux

2026-08-20 12:36:26 -07:00

overlayfs

Merge tag 'vfs-7.3-rc1.ovl' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 13:38:36 -07:00

proc

Merge tag 'mm-stable-2026-08-26-15-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-08-27 09:17:06 -07:00

pstore

Merge tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-04-15 12:59:16 -07:00

qnx4

qnx4: handle set_blocksize failures

2026-05-21 13:39:35 +02:00

qnx6

fs/qnx6: fix pointer arithmetic in directory iteration

2026-05-28 14:16:33 +02:00

quota

quota: Don't issue audit messages on quota enforcing

2026-08-21 09:09:54 +02:00

ramfs

Merge tag 'mm-stable-2026-08-26-15-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-08-27 09:17:06 -07:00

resctrl

fs/resctrl: Inform user space when status buffer overflowed

2026-07-26 21:40:26 -07:00

romfs

Merge tag 'vfs-7.3-rc1.super' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 13:57:04 -07:00

smb

smb: client: fix uid/gid override in getattr with posix extensions

2026-09-08 11:29:10 -03:00

squashfs

squashfs: avoid thundering-herd cache wakeups

2026-08-19 19:55:06 -07:00

sysfs

Merge tag 'driver-core-7.2-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/driver-core/driver-core

2026-06-15 12:41:17 +05:30

tests

fs/tests: exec: Remove bad test vector

2026-03-18 11:41:53 -07:00

tracefs

eventfs: Initialize ei->children and ei->list in init_ei()

2026-08-24 16:42:57 -04:00

ubifs

Merge tag 'ubifs-for-linus-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs

2026-08-28 10:59:07 -07:00

udf

Merge tag 'fs_for_v7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

2026-08-20 12:52:35 -07:00

ufs

Merge tag 'vfs-7.3-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 12:56:12 -07:00

unicode

unicode: Properly reject invalid encoding version strings

2026-07-31 16:33:14 -04:00

vboxsf

Remove excl arg to ->create inode_operation

2026-07-31 10:18:30 +02:00

verity

fsverity: Fix silent truncation in bpf_get_fsverity_digest()

2026-08-04 09:24:23 +02:00

xfs

xfs: replace ns_capable_noaudit

2026-08-21 09:09:54 +02:00

zonefs

zonefs: convert iomap ops to ->iomap_next()

2026-07-31 12:28:50 +02:00

aio.c

Merge tag 'mm-stable-2026-08-18-18-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-08-20 18:17:08 -07:00

anon_inodes.c

libfs: drop redundant SB_I_NOEXEC/SB_I_NODEV in init_pseudo() callers

2026-06-04 10:10:49 +02:00

attr.c

fs,fsverity: remove check for fsverity being enabled in setattr_prepare()

2026-07-28 21:25:03 -07:00

backing-file.c

fs: fix user path of nested backing files

2026-08-12 11:36:40 +02:00

bad_inode.c

Remove excl arg to ->create inode_operation

2026-07-31 10:18:30 +02:00

binfmt_elf_fdpic.c

binfmt_elf_fdpic: consume a stashed PT_INTERP substitute

2026-08-03 10:08:46 +02:00

binfmt_elf.c

Merge tag 'mm-stable-2026-08-18-18-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-08-20 18:17:08 -07:00

binfmt_flat.c

…

binfmt_misc_bpf.c

binfmt_misc: let a 'B' entry bind its interpreters

2026-08-03 19:15:44 +02:00

binfmt_misc.c

Merge tag 'vfs-7.3-rc1.binfmt' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 08:35:25 -07:00

binfmt_script.c

…

bpf_fs_kfuncs.c

Merge tag 'vfs-7.3-rc1.kfunc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 11:02:10 -07:00

buffer.c

Merge tag 'for-7.3/block-20260819' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

2026-08-20 13:55:16 -07:00

char_dev.c

…

compat_binfmt_elf.c

…

coredump.c

coredump: use scoped_with_init_fs() for coredump path resolution

2026-06-29 10:44:08 +02:00

d_path.c

fs: add failfs

2026-07-27 17:17:59 +02:00

dax.c

Merge tag 'mm-stable-2026-08-18-18-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-08-20 18:17:08 -07:00

dcache.c

dcache: keep shrink_dcache_for_umount() making progress on busy roots

2026-07-31 10:46:02 +02:00

direct-io.c

direct-io: remove IOCB_NOWAIT support

2026-05-26 11:01:55 -06:00

drop_caches.c

…

eventfd.c

…

eventpoll.c

Merge tag 'vfs-7.3-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 12:56:12 -07:00

exec.c

Merge tag 'locking-urgent-2026-08-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2026-08-22 16:29:20 -07:00

failfs.c

fs: support FD_FAILFS_ROOT in fchdir()

2026-07-27 17:17:59 +02:00

fcntl.c

Merge tag 'vfs-7.2-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-06-15 03:59:45 +05:30

fhandle.c

fhandle: reject detached mounts in capable_wrt_mount()

2026-07-01 15:26:32 +02:00

file_attr.c

fs: Add case sensitivity flags to file_kattr

2026-05-11 16:50:27 +02:00

file_table.c

Merge tag 'pull-dcache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2026-06-15 04:15:31 +05:30

file.c

fs: retire stale comment in fget_task_next()

2026-05-28 14:27:00 +02:00

filesystems.c

fs: fix switch/case indentation in sysfs() syscall

2026-08-12 11:36:40 +02:00

fs_context.c

Merge tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-04-13 14:20:11 -07:00

fs_dirent.c

…

fs_parser.c

…

fs_pin.c

…

fs_struct.c

fs: stop rewriting paths for PF_EXITING | PF_DUMPCORE

2026-06-29 10:54:43 +02:00

fs-writeback.c

Merge tag 'for-7.3/block-20260819' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

2026-08-20 13:55:16 -07:00

fserror.c

…

fsopen.c

…

init.c

…

inode.c

fs: remove stale inode_insert5() kernel-doc parameter

2026-08-12 11:36:40 +02:00

internal.h

Merge tag 'vfs-7.3-rc1.super' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 13:57:04 -07:00

ioctl.c

…

Kconfig

Merge tags 'vfs-7.3-rc1.efs' and 'vfs-7.3-rc1.freevxfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 08:55:58 -07:00

Kconfig.binfmt

binfmt_misc: add binfmt_misc_ops bpf struct_ops

2026-08-03 10:08:41 +02:00

kernel_read_file.c

fs: use scoped_with_init_fs() for kernel_read_file_from_path_initns()

2026-06-29 10:44:09 +02:00

libfs.c

fs: Provide way for filesystem to wait for metadata writeback

2026-07-27 16:25:32 +02:00

locks.c

filelock: add an inode_lease_ignore_mask helper

2026-05-15 19:24:32 +02:00

Makefile

Merge tag 'vfs-7.3-rc1.failfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 09:15:52 -07:00

mbcache.c

Merge tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-04-13 14:20:11 -07:00

mnt_idmapping.c

fs/statmount: fix slab out-of-bounds write in statmount_mnt_idmap

2026-05-11 14:19:01 +02:00

mount.h

Merge tag 'vfs-7.2-rc1.procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-06-15 04:07:58 +05:30

mpage.c

Merge tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-04-15 12:59:16 -07:00

namei.c

Merge tag 'vfs-7.3-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 12:56:12 -07:00

namespace.c

Merge tag 'vfs-7.3-rc1.super' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 13:57:04 -07:00

nsfs.c

Merge tag 'vfs-7.2-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-06-15 03:59:45 +05:30

nullfs.c

Merge tag 'vfs-7.3-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 12:56:12 -07:00

open.c

fs: support FD_FAILFS_ROOT in fchroot()

2026-07-27 17:18:00 +02:00

pidfs.c

Merge tag 'vfs-7.3-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 12:56:12 -07:00

pipe.c

Merge tag 'sysctl-7.03-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl

2026-08-20 08:46:41 -07:00

pnode.c

…

pnode.h

…

posix_acl.c

Merge tag 'vfs-7.3-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 12:56:12 -07:00

proc_namespace.c

fs: add real_fs to track task's actual fs_struct

2026-06-29 10:43:45 +02:00

read_write.c

fs/read_write: Do not export __kernel_write() to the entire world

2026-06-05 14:46:20 +02:00

readdir.c

fs: Replace user_access_{begin/end} by scoped user access

2026-03-24 14:44:02 +01:00

remap_range.c

…

select.c

Merge tag 'vfs-7.2-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-06-15 03:59:45 +05:30

seq_file.c

seq_file: rename mangle_path to seq_mangle_path

2026-07-31 10:09:14 +02:00

signalfd.c

…

splice.c

…

stack.c

…

stat.c

fs: annotate inode timestamp accessors

2026-07-31 10:09:11 +02:00

statfs.c

…

super.c

Merge tag 'vfs-7.3-rc1.super' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-08-17 13:57:04 -07:00

sync.c

sync_file_range: delete dead S_ISLNK code

2026-05-21 13:39:36 +02:00

sysctls.c

…

timerfd.c

fs/timerfd: Use the new alarm/hrtimer functions

2026-05-01 21:36:13 +02:00

utimes.c

…

xattr.c

Merge tag 'lsm-pr-20260615' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm

2026-06-17 12:34:16 +01:00