kernel_optimize_test/fs
Jan Harkes 3725e9dd5b fs/coda: fix readlink buffer overflow
Dan Carpenter discovered a buffer overflow in the Coda file system
readlink code.  A userspace file system daemon can return a 4096 byte
result which then triggers a one byte write past the allocated readlink
result buffer.

This does not trigger with an unmodified Coda implementation because Coda
has a 1024 byte limit for symbolic links, however other userspace file
systems using the Coda kernel module could be affected.

Although this is an obvious overflow, I don't think this has to be handled
as too sensitive from a security perspective because the overflow is on
the Coda userspace daemon side which already needs root to open Coda's
kernel device and to mount the file system before we get to the point that
links can be read.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-10 13:29:01 -07:00
..
9p
adfs
affs
afs
autofs4
befs
bfs
btrfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-09-05 20:34:28 -07:00
cachefiles
ceph fs: create and use seq_show_option for escaping 2015-09-04 16:54:41 -07:00
cifs fs: create and use seq_show_option for escaping 2015-09-04 16:54:41 -07:00
coda fs/coda: fix readlink buffer overflow 2015-09-10 13:29:01 -07:00
configfs
cramfs
debugfs
devpts
dlm
ecryptfs Invalidate stale eCryptfs dcache entries caused by unlinked lower inodes 2015-09-08 11:26:17 -07:00
efivarfs
efs
exofs
exportfs
ext2 ext2: huge page fault support 2015-09-08 15:35:28 -07:00
ext4 ext4: start transaction before calling into DAX 2015-09-08 15:35:28 -07:00
f2fs
fat
freevxfs
fscache
fuse
gfs2 fs: create and use seq_show_option for escaping 2015-09-04 16:54:41 -07:00
hfs fs: create and use seq_show_option for escaping 2015-09-04 16:54:41 -07:00
hfsplus fs: create and use seq_show_option for escaping 2015-09-04 16:54:41 -07:00
hostfs fs: create and use seq_show_option for escaping 2015-09-04 16:54:41 -07:00
hpfs
hugetlbfs hugetlbfs: add hugetlbfs_fallocate() 2015-09-08 15:35:28 -07:00
isofs
jbd2
jffs2
jfs
kernfs
lockd
logfs
minix
ncpfs
nfs NFS client updates for Linux 4.3 2015-09-07 14:02:24 -07:00
nfs_common
nfsd NFS client updates for Linux 4.3 2015-09-07 14:02:24 -07:00
nilfs2
nls
notify Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-09-05 20:34:28 -07:00
ntfs ntfs: delete unnecessary checks before calling iput() 2015-09-04 16:54:41 -07:00
ocfs2 fs: create and use seq_show_option for escaping 2015-09-04 16:54:41 -07:00
omfs
openpromfs
overlayfs fs: create and use seq_show_option for escaping 2015-09-04 16:54:41 -07:00
proc proc: convert to kstrto*()/kstrto*_from_user() 2015-09-10 13:29:01 -07:00
pstore
qnx4
qnx6
quota Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-09-05 20:34:28 -07:00
ramfs
reiserfs fs: create and use seq_show_option for escaping 2015-09-04 16:54:41 -07:00
romfs
squashfs
sysfs
sysv
tracefs
ubifs
udf
ufs
xfs xfs: huge page fault support 2015-09-08 15:35:28 -07:00
aio.c mm: move ->mremap() from file_operations to vm_operations_struct 2015-09-04 16:54:41 -07:00
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf_fdpic.c
binfmt_elf.c
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
block_dev.c Merge branch 'akpm' (patches from Andrew) 2015-09-08 17:52:23 -07:00
buffer.c
char_dev.c
compat_binfmt_elf.c
compat_ioctl.c
compat.c
coredump.c
dax.c Merge branch 'akpm' (patches from Andrew) 2015-09-08 17:52:23 -07:00
dcache.c
dcookies.c
direct-io.c
drop_caches.c
eventfd.c
eventpoll.c
exec.c
fcntl.c
fhandle.c
file_table.c
file.c
filesystems.c
fs_pin.c
fs_struct.c
fs-writeback.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-09-05 20:34:28 -07:00
inode.c
internal.h
ioctl.c
Kconfig
Kconfig.binfmt
libfs.c
locks.c
Makefile userfaultfd: buildsystem activation 2015-09-04 16:54:41 -07:00
mbcache.c
mount.h
mpage.c
namei.c
namespace.c
no-block.c
nsfs.c
open.c
pipe.c
pnode.c
pnode.h
posix_acl.c
proc_namespace.c
read_write.c
readdir.c
select.c
seq_file.c
signalfd.c
splice.c
stack.c
stat.c
statfs.c
super.c
sync.c
timerfd.c
userfaultfd.c userfaultfd: avoid missing wakeups during refile in userfaultfd_read 2015-09-04 16:54:41 -07:00
utimes.c
xattr.c