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Frank Filz 7ee2cb7f32 nfs: Fix NFS v4 client handling of MAY_EXEC in nfs_permission. 
The problem is that permission checking is skipped if atomic open is
possible, but when exec opens a file, it just opens it O_READONLY which
means EXEC permission will not be checked at that time.

This problem is observed by the following sequence (executed as root):

  mount -t nfs4 server:/ /mnt4
  echo "ls" >/mnt4/foo
  chmod 744 /mnt4/foo
  su guest -c "mnt4/foo"

Signed-off-by: Frank Filz <ffilzlnx@us.ibm.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
Tested-by: Eugene Teo <eugeneteo@kernel.sg>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-18 20:11:12 -07:00
..
9p Fix a leak in failure exit in 9p ->get_sb() 2009-05-09 10:49:40 -04:00
adfs
affs Fix races around the access to ->s_options 2009-05-09 10:51:34 -04:00
afs Fix races around the access to ->s_options 2009-05-09 10:51:34 -04:00
autofs Fix autofs_expire() 2009-04-20 23:01:15 -04:00
autofs4 autofs4: fix incorrect return in autofs4_mount_busy() 2009-05-02 15:36:09 -07:00
befs befs: fix build on parisc 2009-04-08 10:21:43 -07:00
bfs
btrfs Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable 2009-05-14 19:18:44 -07:00
cachefiles
cifs cifs: fix error handling in parse_DFS_referrals 2009-05-14 13:55:32 +00:00
coda
configfs configfs: Fix Trivial Warning in fs/configfs/symlink.c 2009-04-21 12:59:21 -07:00
cramfs
debugfs
devpts devpts: correctly set default options 2009-05-15 08:03:23 -07:00
dlm
ecryptfs Convert obvious places to deactivate_locked_super() 2009-05-09 10:49:40 -04:00
efs
exofs
exportfs
ext2 ext2: missing unlock in ext2_quota_write() 2009-04-27 16:49:52 +02:00
ext3 ext3: Try to avoid starting a transaction in writepage for data=writepage 2009-04-08 13:15:10 -04:00
ext4 ext4: Fix race in ext4_inode_info.i_cached_extent 2009-05-15 09:07:28 -04:00
fat vfat: Note the NLS requirement 2009-04-17 09:32:11 -07:00
freevxfs
fscache
fuse Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse 2009-05-13 16:32:57 -07:00
gfs2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2009-05-10 10:49:08 -07:00
hfs hfs: fix memory leak when unmounting 2009-04-13 15:04:29 -07:00
hfsplus
hostfs
hpfs Fix races around the access to ->s_options 2009-05-09 10:51:34 -04:00
hppfs
hugetlbfs Remove implementation of readpage from the hugetlbfs_aops 2009-05-13 08:04:45 -07:00
isofs
jbd Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 2009-04-24 08:37:40 -07:00
jbd2 jbd2: use SWRITE_SYNC_PLUG when writing synchronous revoke records 2009-04-14 07:50:56 -04:00
jffs2
jfs
lockd lockd: fix list corruption on lockd restart 2009-05-06 17:19:36 -04:00
minix
ncpfs ncpfs: use memdup_user() 2009-04-20 23:02:51 -04:00
nfs nfs: Fix NFS v4 client handling of MAY_EXEC in nfs_permission. 2009-05-18 20:11:12 -07:00
nfs_common
nfsd nfsd: silence lockdep warning 2009-05-11 17:23:14 -04:00
nilfs2 nilfs2: check size of array structured data exchanged via ioctls 2009-05-12 01:48:54 +09:00
nls
notify inotify: use GFP_NOFS in kernel_event() to work around a lockdep false-positive 2009-05-06 16:36:09 -07:00
ntfs
ocfs2 ocfs2: Use nd_set_link(). 2009-05-09 10:49:40 -04:00
omfs
openpromfs
partitions
proc Convert obvious places to deactivate_locked_super() 2009-05-09 10:49:40 -04:00
qnx4
quota quota: remove obsolete comments in fs/quota/Makefile 2009-04-27 16:49:52 +02:00
ramfs
reiserfs reiserfs: fixup perms when xattrs are disabled 2009-05-17 11:45:45 -07:00
romfs ROMFS: romfs_dev_read() error ignored 2009-05-09 10:49:41 -04:00
smbfs
squashfs Squashfs: cody tidying, remove commented out line in Makefile 2009-05-13 03:25:20 +01:00
sysfs sysfs: use memdup_user() 2009-04-20 23:02:50 -04:00
sysv
ubifs Convert obvious places to deactivate_locked_super() 2009-05-09 10:49:40 -04:00
udf
ufs switch ufs directories to ufs_sync_file() 2009-05-09 10:49:42 -04:00
xfs Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs 2009-05-02 16:52:50 -07:00
aio.c
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf.c
binfmt_elf_fdpic.c ptrace: s/parent/real_parent/ in binfmt_elf_fdpic.c 2009-05-02 15:36:10 -07:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
binfmt_som.c
bio-integrity.c
bio.c bio: fix memcpy corruption in bio_copy_user_iov() 2009-04-28 20:24:29 +02:00
block_dev.c
buffer.c mm: close page_mkwrite races 2009-05-02 15:36:09 -07:00
char_dev.c
compat.c do_execve() must not clear fs->in_exec if it was set by another thread 2009-04-24 07:39:45 -07:00
compat_binfmt_elf.c
compat_ioctl.c fs/compat_ioctl: fix build when !BLOCK 2009-04-20 23:01:16 -04:00
dcache.c fs: dcache fix LRU ordering 2009-05-09 10:49:40 -04:00
dcookies.c
direct-io.c dio: Remove code handling bio_alloc failure with __GFP_WAIT 2009-04-15 12:10:13 +02:00
drop_caches.c
eventfd.c
eventpoll.c epoll: fix size check in epoll_create() 2009-05-12 14:11:35 -07:00
exec.c Switch open_exec() and sys_uselib() to do_open_filp() 2009-05-09 10:49:42 -04:00
fcntl.c dup2: Fix return value with oldfd == newfd and invalid fd 2009-05-11 12:18:06 -07:00
fifo.c
file.c
file_table.c
filesystems.c fs: Mark get_filesystem_list() as __init function. 2009-04-20 23:02:52 -04:00
fs-writeback.c
fs_struct.c
generic_acl.c
inode.c Make checkpatch.pl shut up on fs/inode.c 2009-05-09 10:49:41 -04:00
internal.h
ioctl.c fiemap: fix problem with setting FIEMAP_EXTENT_LAST 2009-05-06 16:36:09 -07:00
ioprio.c
Kconfig nilfs2: update makefile and Kconfig 2009-04-07 08:31:16 -07:00
Kconfig.binfmt
libfs.c Convert obvious places to deactivate_locked_super() 2009-05-09 10:49:40 -04:00
locks.c
Makefile nilfs2: update makefile and Kconfig 2009-04-07 08:31:16 -07:00
mbcache.c
mpage.c
namei.c Switch open_exec() and sys_uselib() to do_open_filp() 2009-05-09 10:49:42 -04:00
namespace.c Fix races around the access to ->s_options 2009-05-09 10:51:34 -04:00
nfsctl.c
no-block.c
open.c Switch open_exec() and sys_uselib() to do_open_filp() 2009-05-09 10:49:42 -04:00
pipe.c splice: add helpers for locking pipe inode 2009-04-15 12:10:12 +02:00
pnode.c
pnode.h
posix_acl.c
read_write.c
read_write.h
readdir.c
select.c
seq_file.c
signalfd.c
splice.c splice: fix new kernel-doc warnings 2009-04-17 07:38:07 -07:00
stack.c
stat.c kill vfs_stat_fd / vfs_lstat_fd 2009-04-20 23:02:52 -04:00
super.c NULL noise in fs/super.c:kill_bdev_super() 2009-05-09 10:49:41 -04:00
sync.c
timerfd.c
utimes.c
xattr.c xattr: use memdup_user() 2009-04-20 23:02:50 -04:00
xattr_acl.c