Amanieu d'Antras 5c233bffdb signalfd: fix information leak in signalfd_copyinfo ...

commit 3ead7c52bd upstream.

This function may copy the si_addr_lsb field to user mode when it hasn't
been initialized, which can leak kernel stack data to user mode.

Just checking the value of si_code is insufficient because the same
si_code value is shared between multiple signals.  This is solved by
checking the value of si_signo in addition to si_code.

Signed-off-by: Amanieu d'Antras <amanieu@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2015-08-16 20:51:42 -07:00

..

9p

9p: don't leave a half-initialized inode sitting around

2015-08-03 09:29:47 -07:00

adfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

affs

move d_rcu from overlapping d_child to overlapping d_alias

2015-04-29 10:34:00 +02:00

afs

aio: don't include aio.h in sched.h

2013-05-07 20:16:25 -07:00

autofs4

move d_rcu from overlapping d_child to overlapping d_alias

2015-04-29 10:34:00 +02:00

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: use kmem_cache_free when freeing entry in inode cache

2015-08-03 09:29:46 -07:00

cachefiles

lift sb_start_write() out of ->write()

2013-04-09 14:12:56 -04:00

ceph

move d_rcu from overlapping d_child to overlapping d_alias

2015-04-29 10:34:00 +02:00

cifs

move d_rcu from overlapping d_child to overlapping d_alias

2015-04-29 10:34:00 +02:00

coda

move d_rcu from overlapping d_child to overlapping d_alias

2015-04-29 10:34:00 +02:00

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

move d_rcu from overlapping d_child to overlapping d_alias

2015-04-29 10:34:00 +02:00

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: Remove buggy and unnecessary write in file name decode routine

2015-01-08 09:58:17 -08:00

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

move d_rcu from overlapping d_child to overlapping d_alias

2015-04-29 10:34:00 +02:00

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: replace open coded nofail allocation in ext4_free_blocks()

2015-08-03 09:29:43 -07:00

f2fs

Merge tag 'f2fs-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

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: initialize fc->release before calling it

2015-08-03 09:29:46 -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

hfsplus: fix B-tree corruption after insertion at position 0

2015-04-13 14:02:12 +02:00

hostfs

hostfs: use kmalloc instead of kzalloc

2013-05-04 15:48:45 -04:00

hpfs

hpfs: hpfs_error: Remove static buffer, use vsprintf extension %pV instead

2015-08-03 09:29:47 -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: fix ocfs2 corrupt when updating journal superblock fails

2015-08-03 09:29:43 -07:00

jffs2

jffs2: fix handling of corrupted summary length

2015-03-06 14:40:53 -08:00

jfs

jfs: fix readdir regression

2015-04-29 10:33:57 +02:00

lockd

LOCKD: Fix a race when initialising nlmsvc_timeout

2015-01-27 07:52:33 -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

move d_rcu from overlapping d_child to overlapping d_alias

2015-04-29 10:34:00 +02:00

nfs

fixing infinite OPEN loop in 4.0 stateid recovery

2015-08-03 09:29:47 -07:00

nfs_common

nfs_common: Update the translation between nfsv3 acls linux posix acls

2013-02-13 06:15:14 -08:00

nfsd

nfsd4: fix xdr4 inclusion of escaped char

2015-01-16 06:59:02 -08:00

nilfs2

nilfs2: fix sanity check of btree level in nilfs_btree_root_broken()

2015-05-17 09:51:32 -07:00

nls

nls: fix (and rename) mac NLS table files and config options

2012-06-01 19:51:22 -07:00

notify

fsnotify: fix oops in fsnotify_clear_marks_by_group_flags()

2015-08-16 20:51:35 -07:00

ntfs

aio: don't include aio.h in sched.h

2013-05-07 20:16:25 -07:00

ocfs2

ocfs2: fix BUG in ocfs2_downconvert_thread_do_work()

2015-08-16 20:51:40 -07:00

omfs

fs, omfs: add NULL terminator in the end up the token list

2015-06-05 23:19:54 -07:00

openpromfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

proc

pagemap: do not leak physical addresses to non-privileged userspace

2015-04-19 10:10:51 +02:00

pstore

pstore/ram: avoid atomic accesses for ioremapped regions

2015-02-05 22:35:40 -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: provide interface for readding allocated space into reserved space

2015-01-29 17:40:57 -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

remove extra definitions of U32_MAX

2015-04-29 10:33:54 +02:00

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: Verify symlink size before loading it

2015-01-08 09:58:17 -08:00

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: fix remote symlinks on V5/CRC filesystems

2015-08-03 09:29:45 -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

lseek: the "whence" argument is called "whence"

2012-12-17 17:15:12 -08:00

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_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_elf.c

fs/binfmt_elf.c:load_elf_binary(): return -EINVAL on zero-length mappings

2015-06-05 23:20:00 -07:00

binfmt_em86.c

exec: use -ELOOP for max recursion depth

2012-12-17 17:15:23 -08:00

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

exec: do not leave bprm->interp on stack

2012-12-20 17:40:19 -08:00

binfmt_som.c

get rid of pt_regs argument of ->load_binary()

2012-11-28 21:53:38 -05:00

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

char_dev: pin parent kobject

2012-10-22 08:50:37 +03:00

compat_binfmt_elf.c

coredump: extend core dump note section to contain file names of mapped files

2012-10-06 03:05:17 +09:00

compat_ioctl.c

Removed unused typedef to avoid "unused local typedef" warnings.

2013-05-04 15:03:05 -04:00

compat.c

aio: don't include aio.h in sched.h

2013-05-07 20:16:25 -07:00

coredump.c

coredump: fix the setting of PF_DUMPCORE

2014-07-31 12:53:50 -07:00

coredump.h

coredump: update coredump-related headers

2012-10-06 03:05:15 +09:00

dcache.c

freeing unlinked file indefinitely delayed

2015-08-10 12:20:29 -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

fs, eventfd: add procfs fdinfo helper

2012-12-17 17:15:27 -08:00

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

fs: take i_mutex during prepare_binprm for set[ug]id executables

2015-07-03 19:48:09 -07:00

fcntl.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

fhandle.c

vfs: read file_handle only once in handle_to_path

2015-06-05 23:20:00 -07:00

file_table.c

get rid of s_files and files_lock

2015-07-03 19:48:08 -07:00

file.c

fs/file.c:fdtable: avoid triggering OOMs from alloc_fdmem

2014-02-22 12:41:25 -08:00

filesystems.c

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

fs_struct.c

constify path_get/path_put and fs_struct.c stuff

2013-03-01 23:51:07 -05:00

fs-writeback.c

writeback: fix a subtle race condition in I_DIRTY clearing

2015-01-16 06:59:02 -08:00

generic_acl.c

userns: Pass a userns parameter into posix_acl_to_xattr and posix_acl_from_xattr

2012-09-18 01:01:35 -07:00

inode.c

fs: Fix S_NOSEC handling

2015-07-10 10:40:22 -07:00

internal.h

get rid of s_files and files_lock

2015-07-03 19:48:08 -07:00

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

move d_rcu from overlapping d_child to overlapping d_alias

2015-04-29 10:34:00 +02:00

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

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

namei.c

RCU pathwalk breakage when running into a symlink overmounting something

2015-05-06 21:56:27 +02:00

namespace.c

umount: Disallow unprivileged mount force

2015-01-08 09:58:16 -08:00

no-block.c

…

open.c

get rid of s_files and files_lock

2015-07-03 19:48:08 -07:00

pipe.c

pipe: iovec: Fix memory corruption when retrying atomic copy as non-atomic

2015-06-29 12:08:34 -07:00

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

get rid of magic in proc_namespace.c

2012-07-14 16:32:48 +04:00

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

sched/rt: Move rt specific bits into new header file

2013-02-07 20:51:08 +01:00

seq_file.c

seq_file: always update file->f_pos in seq_lseek()

2013-11-13 12:05:34 +09:00

signalfd.c

signalfd: fix information leak in signalfd_copyinfo

2015-08-16 20:51:42 -07:00

splice.c

splice: Apply generic position and size checks to each write

2015-04-29 10:33:57 +02:00

stack.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

stat.c

quota: provide interface for readding allocated space into reserved space

2015-01-29 17:40:57 -08:00

statfs.c

vfs: allow O_PATH file descriptors for fstatfs()

2013-10-18 07:45:44 -07:00

super.c

get rid of s_files and files_lock

2015-07-03 19:48:08 -07:00

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

vfs: allow utimensat() calls to retry once on an ESTALE error

2012-12-20 18:50:08 -05:00

xattr_acl.c

userns: Fix posix_acl_file_xattr_userns gid conversion

2012-10-12 13:16:48 -07:00

xattr.c

vfs: make lremovexattr retry once on ESTALE error

2012-12-20 18:50:11 -05:00