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Eric W. Biederman c65d3b05d2 umount: Disallow unprivileged mount force 
commit b2f5d4dc38 upstream.

Forced unmount affects not just the mount namespace but the underlying
superblock as well.  Restrict forced unmount to the global root user
for now.  Otherwise it becomes possible a user in a less privileged
mount namespace to force the shutdown of a superblock of a filesystem
in a more privileged mount namespace, allowing a DOS attack on root.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-08 09:58:16 -08:00
..
9p aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
adfs fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
affs fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
afs aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
autofs4 autofs - remove autofs dentry mount check 2013-05-06 13:06:59 -07:00
befs befs_readdir(): do not increment ->f_pos if filldir tells us to stop 2013-05-31 15:17:56 -04:00
bfs fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
btrfs Btrfs: fix kfree on list_head in btrfs_lookup_csums_range error cleanup 2014-11-14 08:48:01 -08:00
cachefiles lift sb_start_write() out of ->write() 2013-04-09 14:12:56 -04:00
ceph ceph: allow sync_read/write return partial successed size of read/write. 2014-01-09 12:24:25 -08:00
cifs CIFS: Fix SMB2 readdir error handling 2014-10-05 14:54:11 -07:00
coda lift sb_start_write() out of ->write() 2013-04-09 14:12:56 -04:00
configfs configfs: fix race between dentry put and lookup 2013-11-29 11:11:53 -08:00
cramfs fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
debugfs debugfs: debugfs_remove_recursive() must not rely on list_empty(d_subdirs) 2013-08-14 22:59:10 -07:00
devpts devpts: plug the memory leak in kill_sb 2013-12-04 10:55:49 -08:00
dlm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-05-01 14:08:52 -07:00
ecryptfs ecryptfs: avoid to access NULL pointer when write metadata in xattr 2014-10-30 09:35:13 -07:00
efivarfs efivarfs: Never return ENOENT from firmware again 2013-05-13 20:12:10 +01:00
efs fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
exofs ore: Fix wrong math in allocation of per device BIO 2014-02-13 13:48:00 -08:00
exportfs hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
ext2 ext2: Fix oops in ext2_get_block() called from ext2_quota_write() 2014-12-16 09:09:43 -08:00
ext3 ext3: Don't check quota format when there are no quota files 2014-11-14 08:48:00 -08:00
ext4 ext4: fix oops when loading block bitmap failed 2014-11-14 08:47:58 -08:00
f2fs f2fs updates for v3.10 2013-05-08 15:11:48 -07:00
fat fat: fix possible overflow for fat_clusters 2013-05-24 16:22:50 -07:00
freevxfs fs: Readd the fs module aliases. 2013-03-12 18:55:21 -07:00
fscache fs/fscache/stats.c: fix memory leak 2013-04-29 15:54:27 -07:00
fuse fuse: handle large user and group ID 2014-07-28 08:00:02 -07:00
gfs2 GFS2: Increase i_writecount during gfs2_setattr_chown 2014-01-25 08:27:11 -08:00
hfs hfs: avoid crash in hfs_bnode_create 2013-05-24 16:22:51 -07:00
hfsplus aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
hostfs hostfs: use kmalloc instead of kzalloc 2013-05-04 15:48:45 -04:00
hpfs hpfs: better test for errors 2013-07-13 11:42:26 -07:00
hppfs hppfs: get rid of ->fsync() 2013-04-29 15:41:42 -04:00
hugetlbfs cope with potentially long ->d_dname() output for shmem/hugetlb 2013-10-18 07:45:45 -07:00
isofs isofs: Fix unchecked printing of ER records 2015-01-08 09:58:15 -08:00
jbd Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs 2013-05-03 09:56:25 -07:00
jbd2 jbd2: free bh when descriptor block checksum fails 2014-11-14 08:47:57 -08:00
jffs2 kill wbuf_queued/wbuf_dwork_lock 2014-11-14 08:47:55 -08:00
jfs jfs: fix error path in ialloc 2013-11-13 12:05:31 +09:00
lockd lockd: Try to reconnect if statd has moved 2014-11-14 08:47:53 -08:00
logfs block: Remove bi_idx references 2013-03-23 14:15:31 -07:00
minix fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
ncpfs ncpfs: fix rmdir returns Device or resource busy 2013-06-07 12:15:38 -04:00
nfs nfs41: fix nfs4_proc_layoutget error handling 2015-01-08 09:58:15 -08:00
nfs_common
nfsd nfsd: Fix ACL null pointer deref 2014-12-06 15:05:50 -08:00
nilfs2 nilfs2: fix data loss with mmap() 2014-10-05 14:54:14 -07:00
nls
notify fanotify: enable close-on-exec on events' fd when requested in fanotify_init() 2014-10-30 09:35:12 -07:00
ntfs aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
ocfs2 ocfs2/dlm: do not get resource spinlock if lockres is new 2014-10-05 14:54:14 -07:00
omfs fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
openpromfs fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
proc CAPABILITIES: remove undefined caps from all processes 2014-09-17 09:03:57 -07:00
pstore pstore: Fix duplicate {console,ftrace}-efi entries 2014-11-14 08:47:55 -08:00
qnx4 fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
qnx6 qnx6: qnx6_readdir() has a braino in pos calculation 2013-05-31 15:17:31 -04:00
quota quota: Properly return errors from dquot_writeback_dquots() 2014-11-14 08:48:00 -08:00
ramfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
reiserfs reiserfs: call truncate_setsize under tailpack mutex 2014-07-06 18:54:15 -07:00
romfs romfs: fix nommu map length to keep inside filesystem 2013-04-29 09:17:57 +10:00
squashfs fs: Limit sys_mount to only request filesystem modules. (Part 3) 2013-03-11 07:09:48 -07:00
sysfs sysfs: check if one entry has been removed before freeing 2013-04-05 15:35:52 -07:00
sysv sysv: Add forgotten superblock lock init for v7 fs 2013-10-05 07:13:09 -07:00
ubifs UBIFS: fix free log space calculation 2014-11-14 08:47:54 -08:00
udf udf: Avoid infinite loop when processing indirect ICBs 2014-10-09 12:18:42 -07:00
ufs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-04-30 09:36:50 -07:00
xfs xfs: don't zero partial page cache pages during O_DIRECT writes 2014-09-17 09:04:01 -07:00
aio.c aio: fix kernel memory disclosure in io_getevents() introduced in v3.10 2014-06-30 20:09:45 -07:00
anon_inodes.c get_empty_filp()/alloc_file() leave both ->f_pos and ->f_version zero 2013-02-26 02:46:11 -05:00
attr.c fs,userns: Change inode_capable to capable_wrt_inode_uidgid 2014-06-16 13:42:52 -07:00
bad_inode.c
binfmt_aout.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
binfmt_elf.c fs/binfmt_elf.c: prevent a coredump with a large vm_map_count from Oopsing 2013-10-13 16:08:31 -07:00
binfmt_elf_fdpic.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-05-02 10:16:16 -07:00
binfmt_em86.c
binfmt_flat.c new helper: read_code() 2013-04-29 15:40:23 -04:00
binfmt_misc.c binfmt_misc: reuse string_unescape_inplace() 2013-04-30 17:04:03 -07:00
binfmt_script.c
binfmt_som.c
bio-integrity.c bio-integrity: Fix bio_integrity_verify segment start bug 2014-03-23 21:38:21 -07:00
bio.c block: Fix bio_copy_data() 2013-10-05 07:13:09 -07:00
block_dev.c writeback: Fix periodic writeback after fs mount 2013-07-28 16:29:40 -07:00
buffer.c vfs: fix data corruption when blocksize < pagesize for mmaped data 2014-11-14 08:47:54 -08:00
char_dev.c
compat.c aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
compat_binfmt_elf.c
compat_ioctl.c Removed unused typedef to avoid "unused local typedef" warnings. 2013-05-04 15:03:05 -04:00
coredump.c coredump: fix the setting of PF_DUMPCORE 2014-07-31 12:53:50 -07:00
coredump.h
dcache.c vfs: fix bad hashing of dentries 2014-09-17 09:04:02 -07:00
dcookies.c fs/compat: fix lookup_dcookie() parameter handling 2014-02-13 13:48:00 -08:00
direct-io.c Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block 2013-05-08 10:13:35 -07:00
drop_caches.c
eventfd.c
eventpoll.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 2013-05-01 07:21:43 -07:00
exec.c metag: Reduce maximum stack size to 256MB 2014-06-07 13:25:38 -07:00
fcntl.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
fhandle.c
file.c fs/file.c:fdtable: avoid triggering OOMs from alloc_fdmem 2014-02-22 12:41:25 -08:00
file_table.c don't bother with {get,put}_write_access() on non-regular files 2014-05-30 21:52:12 -07:00
filesystems.c fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
fs-writeback.c bdi: avoid oops on device removal 2014-04-26 17:15:35 -07:00
fs_struct.c constify path_get/path_put and fs_struct.c stuff 2013-03-01 23:51:07 -05:00
generic_acl.c
inode.c fs,userns: Change inode_capable to capable_wrt_inode_uidgid 2014-06-16 13:42:52 -07:00
internal.h splice: don't pass the address of ->f_pos to methods 2013-06-20 19:02:45 +04:00
ioctl.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
ioprio.c block: Fix computation of merged request priority 2014-11-21 09:22:53 -08:00
Kconfig efivarfs: Move to fs/efivarfs 2013-04-17 13:25:09 +01:00
Kconfig.binfmt fs: make binfmt support for #! scripts modular and removable 2013-04-30 17:04:04 -07:00
libfs.c
locks.c locks: allow __break_lease to sleep even when break_time is 0 2014-05-13 13:59:44 +02:00
Makefile Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
mbcache.c
mount.h vfs: Is mounted should be testing mnt_ns for NULL or error. 2014-02-06 11:08:16 -08:00
mpage.c
namei.c vfs: fix bad hashing of dentries 2014-09-17 09:04:02 -07:00
namespace.c umount: Disallow unprivileged mount force 2015-01-08 09:58:16 -08:00
no-block.c
open.c don't bother with {get,put}_write_access() on non-regular files 2014-05-30 21:52:12 -07:00
pipe.c vfs: fix subtle use-after-free of pipe_inode_info 2013-12-11 22:36:26 -08:00
pnode.c vfs: Fix invalid ida_remove() call 2013-05-31 15:16:33 -04:00
pnode.h Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
posix_acl.c posix_acl: handle NULL ACL in posix_acl_equiv_mode 2014-06-07 13:25:33 -07:00
proc_namespace.c
read_write.c fs/compat: fix parameter handling for compat readv/writev syscalls 2014-02-13 13:48:00 -08:00
readdir.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
select.c
seq_file.c seq_file: always update file->f_pos in seq_lseek() 2013-11-13 12:05:34 +09:00
signalfd.c switch signalfd{,4}() to COMPAT_SYSCALL_DEFINE 2013-03-03 22:58:46 -05:00
splice.c fuse: fix pipe_buf_operations 2014-02-13 13:47:59 -08:00
stack.c
stat.c switch vfs_getattr() to struct path 2013-02-26 02:46:08 -05:00
statfs.c vfs: allow O_PATH file descriptors for fstatfs() 2013-10-18 07:45:44 -07:00
super.c fs: Fix theoretical division by 0 in super_cache_scan(). 2014-11-14 08:47:54 -08:00
sync.c teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long 2013-03-03 22:46:22 -05:00
timerfd.c compat: restore timerfd settime and gettime compat syscalls 2013-03-02 09:35:13 -05:00
utimes.c
xattr.c
xattr_acl.c