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Max Filippov 4e79b4a64d exec: Fix NOMMU linux_binprm::exec in transfer_args_to_stack() 
commit 2aea94ac14d1e0a8ae9e34febebe208213ba72f7 upstream.

In NOMMU kernel the value of linux_binprm::p is the offset inside the
temporary program arguments array maintained in separate pages in the
linux_binprm::page. linux_binprm::exec being a copy of linux_binprm::p
thus must be adjusted when that array is copied to the user stack.
Without that adjustment the value passed by the NOMMU kernel to the ELF
program in the AT_EXECFN entry of the aux array doesn't make any sense
and it may break programs that try to access memory pointed to by that
entry.

Adjust linux_binprm::exec before the successful return from the
transfer_args_to_stack().

Cc: <stable@vger.kernel.org>
Fixes: b6a2fea39318 ("mm: variable length argument support")
Fixes: 5edc2a5123a7 ("binfmt_elf_fdpic: wire up AT_EXECFD, AT_EXECFN, AT_SECURE")
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Link: https://lore.kernel.org/r/20240320182607.1472887-1-jcmvbkbc@gmail.com
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-04-03 15:19:48 +02:00
..
9p
9p: Fix initialisation of netfs_inode for 9p
2024-02-05 20:12:59 +00:00
adfs
…
affs
affs: initialize fsdata in affs_truncate()
2023-02-01 08:34:08 +01:00
afs
afs: Revert "afs: Hide silly-rename files from userspace"
2024-03-26 18:20:57 -04:00
autofs
autofs: fix memory leak of waitqueues in autofs_catatonic_mode
2023-09-23 11:10:59 +02:00
befs
…
bfs
…
btrfs
btrfs: zoned: use zone aware sb location for scrub
2024-04-03 15:19:48 +02:00
cachefiles
cachefiles: fix memory leak in cachefiles_add_cache()
2024-03-01 13:26:32 +01:00
ceph
ceph: switch to corrected encoding of max_xattr_size in mdsmap
2024-03-15 10:48:13 -04:00
coda
coda: Avoid partial allocation of sig_inputArgs
2023-03-10 09:33:52 +01:00
configfs
configfs: fix possible memory leak in configfs_create_dir()
2022-12-31 13:32:22 +01:00
cramfs
fs/cramfs/inode.c: initialize file_ra_state
2023-03-10 09:34:09 +01:00
crypto
blk-crypto: add a blk_crypto_config_supported_natively helper
2023-05-11 23:03:00 +09:00
debugfs
debugfs: fix automount d_fsdata usage
2024-01-20 11:50:04 +01:00
devpts
…
dlm
fs: dlm: don't put dlm_local_addrs on heap
2024-02-16 19:06:29 +01:00
ecryptfs
ecryptfs: Reject casefold directory inodes
2024-02-05 20:12:49 +00:00
efivarfs
efivarfs: Request at most 512 bytes for variable names
2024-03-06 14:45:11 +00:00
efs
…
erofs
erofs: apply proper VMA alignment for memory mapped files on THP
2024-03-15 10:48:16 -04:00
exfat
exfat: support handle zero-size directory
2023-11-28 17:07:00 +00:00
exportfs
exportfs: use pr_debug for unreachable debug statements
2024-03-06 14:45:15 +00:00
ext2
ext2: fix datatype of block number in ext2_xattr_set2()
2023-09-23 11:11:05 +02:00
ext4
ext4: fix corruption during on-line resize
2024-04-03 15:19:32 +02:00
f2fs
f2fs: truncate page cache before clearing flags when aborting atomic write
2024-04-03 15:19:37 +02:00
fat
fat: fix uninitialized field in nostale filehandles
2024-04-03 15:19:27 +02:00
freevxfs
…
fscache
netfs, fscache: Prevent Oops in fscache_put_cache()
2024-01-31 16:17:04 -08:00
fuse
fuse: don't unhash root
2024-04-03 15:19:30 +02:00
gfs2
gfs2: Fix kernel NULL pointer dereference in gfs2_rgrp_dump
2024-01-25 15:27:22 -08:00
hfs
hfs: fix missing hfs_bnode_get() in __hfs_bnode_create
2023-03-10 09:34:07 +01:00
hfsplus
fs: hfsplus: remove WARN_ON() from hfsplus_cat_{read,write}_inode()
2023-05-24 17:32:34 +01:00
hostfs
hostfs: move from strlcpy with unused retval to strscpy
2022-09-19 22:46:25 +02:00
hpfs
…
hugetlbfs
mm: hugetlb pages should not be reserved by shmat() if SHM_NORESERVE
2024-02-23 09:12:46 +01:00
iomap
iomap: update ki_pos a little later in iomap_dio_complete
2023-12-08 08:51:20 +01:00
isofs
- hfs and hfsplus kmap API modernization from Fabio Francesco
2022-10-12 11:00:22 -07:00
jbd2
jbd2: fix soft lockup in journal_finish_inode_data_buffers()
2024-01-20 11:50:07 +01:00
jffs2
jffs2: reduce stack usage in jffs2_build_xattr_subsystem()
2023-07-19 16:22:11 +02:00
jfs
jfs: fix array-index-out-of-bounds in diNewExt
2024-02-05 20:12:48 +00:00
kernfs
fs/kernfs/dir: obey S_ISGID
2024-02-05 20:12:58 +00:00
lockd
lockd: fix file selection in nlmsvc_cancel_blocked
2024-03-06 14:45:16 +00:00
minix
vfs: open inside ->tmpfile()
2022-09-24 07:00:00 +02:00
netfs
netfs: Only call folio_start_fscache() one time for each folio
2023-10-06 14:56:32 +02:00
nfs
nfs: fix UAF in direct writes
2024-04-03 15:19:34 +02:00
nfs_common
…
nfsd
NFSD: Fix nfsd_clid_class use of __string_len() macro
2024-04-03 15:19:38 +02:00
nilfs2
nilfs2: prevent kernel bug at submit_bh_wbc()
2024-04-03 15:19:37 +02:00
nls
fs/nls: make load_nls() take a const parameter
2023-09-13 09:42:22 +02:00
notify
fanotify: disallow mount/sb marks on kernel internal pseudo fs
2023-07-19 16:22:05 +02:00
ntfs
- hfs and hfsplus kmap API modernization from Fabio Francesco
2022-10-12 11:00:22 -07:00
ntfs3
fs/ntfs3: Fix NULL pointer dereference in 'ni_write_inode'
2024-03-06 14:45:06 +00:00
ocfs2
fs: ocfs2: namei: check return value of ocfs2_add_entry()
2023-09-13 09:42:33 +02:00
omfs
…
openpromfs
…
orangefs
use less confusing names for iov_iter direction initializers
2023-02-09 11:28:04 +01:00
overlayfs
ima: detect changes to the backing overlay file
2023-11-28 17:07:12 +00:00
proc
fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
2024-03-15 10:48:22 -04:00
pstore
pstore: inode: Only d_invalidate() is needed
2024-03-26 18:20:38 -04:00
qnx4
…
qnx6
fs/qnx6: delete unnecessary checks before brelse()
2022-09-11 21:55:07 -07:00
quota
quota: Fix rcu annotations of inode dquot pointers
2024-03-26 18:20:47 -04:00
ramfs
shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs
2023-07-19 16:22:11 +02:00
reiserfs
reiserfs: Check the return value from __getblk()
2023-09-13 09:42:27 +02:00
romfs
…
smb
cifs: open_cached_dir(): add FILE_READ_EA to desired access
2024-04-03 15:19:37 +02:00
squashfs
revert "squashfs: harden sanity check in squashfs_read_xattr_id_table"
2023-02-22 12:59:50 +01:00
sysfs
…
sysv
fs/sysv: Null check to prevent null-ptr-deref bug
2023-08-11 12:08:23 +02:00
tracefs
tracefs: Add missing lockdown check to tracefs_create_dir()
2023-09-23 11:11:12 +02:00
ubifs
ubifs: Set page uptodate in the correct place
2024-04-03 15:19:27 +02:00
udf
udf: initialize newblock to 0
2023-09-13 09:43:05 +02:00
ufs
ufs: replace ll_rw_block()
2022-09-11 20:26:07 -07:00
unicode
…
vboxsf
…
verity
fsverity: skip PKCS#7 parser when keyring is empty
2023-09-13 09:43:03 +02:00
xfs
xfs: read only mounts with fsopen mount API are busted
2024-01-31 16:17:08 -08:00
zonefs
zonefs: Improve error handling
2024-02-23 09:12:45 +01:00
aio.c
fs/aio: Check IOCB_AIO_RW before the struct aio_kiocb conversion
2024-04-03 15:19:42 +02:00
anon_inodes.c
…
attr.c
attr: block mode changes of symlinks
2023-09-23 11:11:10 +02:00
bad_inode.c
vfs: open inside ->tmpfile()
2022-09-24 07:00:00 +02:00
binfmt_elf_fdpic.c
fs: binfmt_elf_efpic: fix personality for ELF-FDPIC
2023-10-06 14:57:06 +02:00
binfmt_elf_test.c
…
binfmt_elf.c
mm: always expand the stack with the mmap write lock held
2023-07-01 13:16:25 +02:00
binfmt_flat.c
…
binfmt_misc.c
binfmt_misc: fix shift-out-of-bounds in check_special_flags
2022-12-31 13:32:57 +01:00
binfmt_script.c
…
buffer.c
- hfs and hfsplus kmap API modernization from Fabio Francesco
2022-10-12 11:00:22 -07:00
char_dev.c
chardev: fix error handling in cdev_device_add()
2022-12-31 13:32:41 +01:00
compat_binfmt_elf.c
…
coredump.c
coredump: Move dump_emit_page() to kill unused warning
2023-02-22 12:59:50 +01:00
d_path.c
d_path.c: typo fix...
2022-08-20 11:34:33 -04:00
dax.c
Merge branch 'for-6.0/dax' into libnvdimm-fixes
2022-09-24 18:14:12 -07:00
dcache.c
fast_dput(): handle underflows gracefully
2024-02-05 20:12:54 +00:00
direct-io.c
block: remove PSI accounting from the bio layer
2022-09-20 08:24:38 -06:00
drop_caches.c
…
eventfd.c
eventfd: prevent underflow for eventfd semaphores
2023-09-13 09:42:27 +02:00
eventpoll.c
epoll: ep_autoremove_wake_function should use list_del_init_careful
2023-06-21 16:00:54 +02:00
exec.c
exec: Fix NOMMU linux_binprm::exec in transfer_args_to_stack()
2024-04-03 15:19:48 +02:00
fcntl.c
fs: Fix rw_hint validation
2024-03-26 18:20:28 -04:00
fhandle.c
do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak
2024-03-26 18:20:27 -04:00
file_table.c
…
file.c
file: reinstate f_pos locking optimization for regular files
2023-08-11 12:08:23 +02:00
filesystems.c
…
fs_context.c
vfs, security: Fix automount superblock LSM init problem, preventing NFS sb sharing
2023-09-13 09:42:28 +02:00
fs_parser.c
ext4: journal_path mount options should follow links
2023-01-07 11:11:59 +01:00
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
writeback, cgroup: switch inodes with dirty timestamps to release dying cgwbs
2023-11-20 11:51:50 +01:00
fsopen.c
…
init.c
…
inode.c
filemap: add a per-mapping stable writes flag
2024-01-10 17:10:32 +01:00
internal.h
nfs: use vfs setgid helper
2023-08-30 16:11:10 +02:00
ioctl.c
lsm: new security_file_ioctl_compat() hook
2024-01-31 16:17:00 -08:00
Kconfig
smb: move client and server files to common directory fs/smb
2023-06-28 11:12:40 +02:00
Kconfig.binfmt
Xtensa updates for v6.1
2022-10-10 14:21:11 -07:00
kernel_read_file.c
…
libfs.c
libfs: add DEFINE_SIMPLE_ATTRIBUTE_SIGNED for signed value
2022-12-31 13:31:58 +01:00
locks.c
filelock: add a new locks_inode_context accessor function
2024-03-06 14:45:16 +00:00
Makefile
smb: move client and server files to common directory fs/smb
2023-06-28 11:12:40 +02:00
mbcache.c
ext4: fix deadlock due to mbcache entry corruption
2023-01-07 11:12:02 +01:00
mount.h
…
mpage.c
…
namei.c
rename(): fix the locking of subdirectories
2024-01-31 16:17:02 -08:00
namespace.c
fs: relax mount_setattr() permission checks
2024-02-23 09:12:46 +01:00
no-block.c
…
nsfs.c
…
open.c
open: make RESOLVE_CACHED correctly test for O_TMPFILE
2023-08-11 12:08:22 +02:00
pipe.c
pipe: wakeup wr_wait after setting max_usage
2024-01-31 16:17:09 -08:00
pnode.c
pnode: terminate at peers of source
2023-01-04 11:29:01 +01:00
pnode.h
…
posix_acl.c
- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in
2022-10-10 17:53:04 -07:00
proc_namespace.c
…
read_write.c
use less confusing names for iov_iter direction initializers
2023-02-09 11:28:04 +01:00
readdir.c
…
remap_range.c
…
select.c
fs/select: rework stack allocation hack for clang
2024-03-26 18:20:28 -04:00
seq_file.c
use less confusing names for iov_iter direction initializers
2023-02-09 11:28:04 +01:00
signalfd.c
…
splice.c
mm: merge folio_has_private()/filemap_release_folio() call pairs
2024-01-10 17:10:31 +01:00
stack.c
…
stat.c
vfs: support STATX_DIOALIGN on block devices
2022-09-11 19:47:12 -05:00
statfs.c
statfs: enforce statfs[64] structure initialization
2023-05-24 17:32:51 +01:00
super.c
fs: Protect reconfiguration of sb read-write from racing writes
2023-08-11 12:08:24 +02:00
sync.c
…
sysctls.c
…
timerfd.c
…
userfaultfd.c
Revert "userfaultfd: don't fail on unrecognized features"
2023-04-26 14:28:37 +02:00
utimes.c
…
xattr.c
fs: don't audit the capability check in simple_xattr_list()
2022-12-31 13:31:55 +01:00