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Eric Sandeen c5157b3e77 seq_file: disallow extremely large seq buffer allocations 
commit 8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b upstream.

There is no reasonable need for a buffer larger than this, and it avoids
int overflow pitfalls.

Fixes: 058504edd026 ("fs/seq_file: fallback to vmalloc allocation")
Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Reported-by: Qualys Security Advisory <qsa@qualys.com>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-20 16:21:16 +02:00
..
9p
9P: Cast to loff_t before multiplying
2020-11-10 10:23:59 +01:00
adfs
fs/adfs: super: fix use-after-free bug
2019-08-06 18:29:35 +02:00
affs
affs: fix basic permission bits to actually work
2020-09-12 11:47:39 +02:00
afs
afs: Fix large file support
2020-01-29 10:24:34 +01:00
autofs4
autofs: fix a leak in autofs_expire_indirect()
2019-12-21 10:40:46 +01:00
befs
…
bfs
bfs: add sanity check at bfs_fill_super()
2018-12-01 09:44:19 +01:00
btrfs
btrfs: disable build on platforms having page size 256K
2021-07-20 16:20:59 +02:00
cachefiles
cachefiles: Handle readpage error correctly
2020-11-10 10:24:00 +01:00
ceph
ceph: remove bogus checks and WARN_ONs from ceph_set_page_dirty
2021-07-20 16:21:13 +02:00
cifs
cifs: fix memory leak in smb2_copychunk_range
2021-05-26 11:29:06 +02:00
coda
coda: add error handling for fget
2019-08-06 18:29:38 +02:00
configfs
configfs: fix memleak in configfs_release_bin_file
2021-07-20 16:21:05 +02:00
cramfs
Cramfs: fix abad comparison when wrap-arounds occur
2018-11-13 11:17:03 -08:00
crypto
fscrypt: don't ignore minor_hash when hash is 0
2021-07-20 16:21:11 +02:00
debugfs
debugfs: fix use-after-free on symlink traversal
2019-05-08 07:19:10 +02:00
devpts
fs/devpts: always delete dcache dentry-s in dput()
2019-03-23 13:19:47 +01:00
dlm
fs: dlm: fix memory leak when fenced
2021-07-20 16:21:00 +02:00
ecryptfs
Revert "ecryptfs: replace BUG_ON with error handling code"
2021-05-26 11:29:07 +02:00
efivarfs
efivarfs: revert "fix memory leak in efivarfs_create()"
2020-12-02 08:31:28 +01:00
efs
…
exofs
fs/exofs: fix potential memory leak in mount option parsing
2018-11-27 16:09:38 +01:00
exportfs
exportfs: fix 'passing zero to ERR_PTR()' warning
2020-01-29 10:24:03 +01:00
ext2
ext2: fix missing percpu_counter_inc
2020-08-21 11:02:08 +02:00
ext4
ext4: fix avefreec in find_group_orlov
2021-07-20 16:20:57 +02:00
f2fs
f2fs: fix a redundant call to f2fs_balance_fs if an error occurs
2021-05-22 10:40:30 +02:00
fat
fat: don't allow to mount if the FAT length == 0
2020-06-20 10:24:13 +02:00
freevxfs
…
fscache
fscache: fix race between enablement and dropping of object
2018-12-17 09:38:34 +01:00
fuse
fuse: reject internal errno
2021-07-20 16:21:08 +02:00
gfs2
gfs2: Fix use-after-free in gfs2_glock_shrink_scan
2021-06-30 08:49:11 -04:00
hfs
fs/hfs/extent.c: fix array out of bounds read of array extent
2019-11-28 18:28:50 +01:00
hfsplus
hfsplus: fix crash and filesystem corruption when deleting files
2020-04-24 07:58:59 +02:00
hostfs
…
hpfs
…
hugetlbfs
hugetlbfs: hugetlb_fault_mutex_hash() cleanup
2021-06-03 08:23:33 +02:00
isofs
isofs: release buffer head before return
2021-03-03 17:44:37 +01:00
jbd2
jbd2: abort journal if free a async write error metadata buffer
2020-09-03 11:21:19 +02:00
jffs2
jffs2: check the validity of dstlen in jffs2_zlib_compress()
2021-05-22 10:40:19 +02:00
jfs
fs/jfs: Fix missing error code in lmLogInit()
2021-07-20 16:21:11 +02:00
kernfs
kernfs: Fix range checks in kernfs_get_target_path
2019-11-25 09:52:23 +01:00
lockd
lockd: don't use interval-based rebinding over TCP
2020-12-29 13:44:57 +01:00
logfs
…
minix
fs/minix: reject too-large maximum file size
2020-08-21 11:02:06 +02:00
ncpfs
ncpfs: fix build warning of strncpy
2019-03-13 14:04:52 -07:00
nfs
nfs: fix acl memory leak of posix_acl_create()
2021-07-20 16:21:14 +02:00
nfs_common
nfs_common: need lock during iterate through the list
2020-12-29 13:44:59 +01:00
nfsd
nfsd4: readdirplus shouldn't return parent of export
2021-01-23 15:38:18 +01:00
nilfs2
nilfs2: fix memory leak in nilfs_sysfs_delete_device_group
2021-06-30 08:49:21 -04:00
nls
…
notify
fanotify: fix handling of events on child sub-directory
2019-02-06 17:33:30 +01:00
ntfs
ntfs: fix validity check for file name attribute
2021-07-20 16:20:56 +02:00
ocfs2
ocfs2: fix snprintf() checking
2021-07-20 16:21:01 +02:00
omfs
…
openpromfs
…
orangefs
orangefs: fix orangefs df output.
2021-07-20 16:21:13 +02:00
overlayfs
ovl: skip getxattr of security labels
2021-02-23 13:59:15 +01:00
proc
proc: only require mm_struct for writing
2021-06-16 11:36:36 +02:00
pstore
pstore/ram: Write new dumps to start of recycled zones
2020-01-12 11:24:20 +01:00
qnx4
…
qnx6
…
quota
quota: Don't overflow quota file offsets
2021-01-09 13:35:50 +01:00
ramfs
…
reiserfs
reiserfs: add check for invalid 1st journal block
2021-07-20 16:21:06 +02:00
romfs
romfs: fix uninitialized memory leak in romfs_dev_read()
2020-08-26 10:29:03 +02:00
squashfs
squashfs: fix divide error in calculate_skip()
2021-05-22 10:40:32 +02:00
sysfs
sysfs: Add sysfs_emit and sysfs_emit_at to format sysfs output
2021-03-07 11:25:58 +01:00
sysv
sysv: return 'err' instead of 0 in __sysv_write_inode
2018-12-17 09:38:32 +01:00
tracefs
…
ubifs
ubifs: Set/Clear I_LINKABLE under i_lock for whiteout inode
2021-07-20 16:21:14 +02:00
udf
udf: Fix NULL pointer dereference in udf_symlink function
2021-07-20 16:21:06 +02:00
ufs
fs/ufs: avoid potential u32 multiplication overflow
2020-08-21 11:02:11 +02:00
xfs
xfs: Fix assert failure in xfs_setattr_size()
2021-03-07 11:25:56 +01:00
aio.c
aio: fix spectre gadget in lookup_ioctx
2018-12-21 14:11:31 +01:00
anon_inodes.c
…
attr.c
…
bad_inode.c
bad_inode: add missing i_op initializers
2017-01-09 08:32:24 +01:00
binfmt_aout.c
…
binfmt_elf_fdpic.c
…
binfmt_elf.c
fs/binfmt_elf.c: allocate initialized memory in fill_thread_core_info()
2020-06-03 08:16:42 +02:00
binfmt_em86.c
…
binfmt_flat.c
fs/binfmt_flat.c: make load_flat_shared_library() work
2019-07-10 09:55:38 +02:00
binfmt_misc.c
binfmt_misc: fix possible deadlock in bm_register_write
2021-03-17 16:10:18 +01:00
binfmt_script.c
exec: load_script: Do not exec truncated interpreter path
2019-11-06 12:18:04 +01:00
block_dev.c
bdev: Reduce time holding bd_mutex in sync in blkdev_close()
2020-10-01 20:40:12 +02:00
buffer.c
fs: Don't invalidate page buffers in block_write_full_page()
2020-11-10 10:23:56 +01:00
char_dev.c
chardev: add helper function to register char devs with a struct device
2020-05-20 08:15:32 +02:00
compat_binfmt_elf.c
binfmt_elf: compat: avoid unused function warning
2018-02-25 11:05:55 +01:00
compat_ioctl.c
media: dvb_frontend: Add compat_ioctl callback
2020-06-30 15:38:35 -04:00
compat.c
…
coredump.c
coredump: Ensure proper size of sparse core files
2017-07-05 14:40:26 +02:00
dax.c
fs/dax.c: fix inefficiency in dax_writeback_mapping_range()
2018-02-28 10:18:33 +01:00
dcache.c
Hang/soft lockup in d_invalidate with simultaneous calls
2019-03-27 14:13:04 +09:00
dcookies.c
…
direct-io.c
fs: direct-io: fix missing sdio->boundary
2021-04-16 11:59:07 +02:00
drop_caches.c
fs/drop_caches.c: avoid softlockups in drop_pagecache_sb()
2019-03-13 14:04:58 -07:00
eventfd.c
…
eventpoll.c
ep_create_wakeup_source(): dentry name can change under you...
2020-10-14 09:48:13 +02:00
exec.c
exit/exec: Seperate mm_release()
2021-02-03 23:19:49 +01:00
fcntl.c
fs/fcntl: f_setown, avoid undefined behaviour
2018-01-31 12:55:52 +01:00
fhandle.c
…
file_table.c
…
file.c
fix multiplication overflow in copy_fdtable()
2020-05-27 16:41:40 +02:00
filesystems.c
…
fs_pin.c
…
fs_struct.c
…
fs-writeback.c
writeback: fix obtain a reference to a freeing memcg css
2021-07-20 16:21:03 +02:00
inode.c
futex: Fix inode life-time issue
2020-04-02 17:20:27 +02:00
internal.h
xfs: evict all inodes involved with log redo item
2017-09-20 08:20:01 +02:00
ioctl.c
…
iomap.c
iomap: fix integer truncation issues in the zeroing and dirtying helpers
2017-09-20 08:19:59 +02:00
Kconfig
…
Kconfig.binfmt
…
libfs.c
libfs: fix error cast of negative value in simple_attr_write()
2020-11-24 13:03:05 +01:00
locks.c
locks: print unsigned ino in /proc/locks
2020-01-12 11:24:13 +01:00
Makefile
…
mbcache.c
mbcache: initialize entry->e_referenced in mb_cache_entry_create()
2018-02-22 15:43:48 +01:00
mount.h
mnt: In propgate_umount handle visiting mounts in any order
2017-07-21 07:42:22 +02:00
mpage.c
fs/mpage.c: fix mpage_writepage() for pages with buffers
2017-10-18 09:35:39 +02:00
namei.c
namei: only return -ECHILD from follow_dotdot_rcu()
2020-03-11 07:53:07 +01:00
namespace.c
fs/namespace.c: fix mountpoint reference counter race
2020-05-02 17:23:10 +02:00
no-block.c
…
nsfs.c
nsfs: mark dentry with DCACHE_RCUACCESS
2018-02-17 13:21:15 +01:00
open.c
cifs_atomic_open(): fix double-put on late allocation failure
2020-03-20 09:07:44 +01:00
pipe.c
fs: prevent page refcount overflow in pipe_buf_get
2019-06-11 12:22:45 +02:00
pnode.c
propagate_one(): mnt_set_mountpoint() needs mount_lock
2020-05-02 17:23:20 +02:00
pnode.h
mnt: Tuck mounts under others instead of creating shadow/side mounts.
2017-03-15 10:02:43 +08:00
posix_acl.c
tmpfs: clear S_ISGID when setting posix ACLs
2017-01-26 08:24:37 +01:00
proc_namespace.c
…
read_write.c
fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock
2019-06-11 12:22:49 +02:00
readdir.c
filldir[64]: remove WARN_ON_ONCE() for bad directory entries
2020-01-04 13:41:06 +01:00
select.c
kernel, fs: Introduce and use set_restart_fn() and arch_set_restart_data()
2021-03-24 10:59:25 +01:00
seq_file.c
seq_file: disallow extremely large seq buffer allocations
2021-07-20 16:21:16 +02:00
signalfd.c
…
splice.c
fs: prevent page refcount overflow in pipe_buf_get
2019-06-11 12:22:45 +02:00
stack.c
…
stat.c
ufs: restore maintaining ->i_blocks
2017-06-14 15:06:01 +02:00
statfs.c
…
super.c
vfs: remove lockdep bogosity in __sb_start_write
2020-11-24 13:03:00 +01:00
sync.c
…
timerfd.c
timerfd: Protect the might cancel mechanism proper
2017-05-08 07:47:54 +02:00
userfaultfd.c
userfaultfd_release: always remove uffd flags and clear vm_userfaultfd_ctx
2019-09-06 10:19:37 +02:00
utimes.c
…
xattr.c
xattr: break delegations in {set,remove}xattr
2020-08-21 11:01:55 +02:00