linux/security
Mickaël Salaün 63817febd1
landlock: Use f_cred in security_file_open() hook
Use landlock_cred(file->f_cred)->domain instead of
landlock_get_current_domain() in security_file_open() hook
implementation.

This should not change the current behavior but could avoid potential
race conditions in case of current task's credentials change.

This will also ensure consistency with upcoming audit support relying on
file->f_cred.

Add and use a new get_fs_domain() helper to mask non-filesystem domains.

file->f_cred is set by path_openat()/alloc_empty_file()/init_file() just
before calling security_file_alloc().

Cc: Christian Brauner <brauner@kernel.org>
Cc: Günther Noack <gnoack@google.com>
Cc: Jann Horn <jannh@google.com>
Cc: Paul Moore <paul@paul-moore.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20240307095203.1467189-1-mic@digikod.net
Signed-off-by: Mickaël Salaün <mic@digikod.net>
2024-03-08 18:22:16 +01:00
..
apparmor exec: Check __FMODE_EXEC instead of in_execve for LSMs 2024-01-24 11:38:58 -08:00
bpf lsm: mark the lsm_id variables are marked as static 2023-11-12 22:54:42 -05:00
integrity integrity-v6.8 2024-01-09 13:24:06 -08:00
keys Revert "KEYS: encrypted: Add check for strsep" 2024-01-24 16:11:59 -05:00
landlock landlock: Use f_cred in security_file_open() hook 2024-03-08 18:22:16 +01:00
loadpin lsm: mark the lsm_id variables are marked as static 2023-11-12 22:54:42 -05:00
lockdown LSM: Identify modules by more than name 2023-11-12 22:54:42 -05:00
safesetid lsm: mark the lsm_id variables are marked as static 2023-11-12 22:54:42 -05:00
selinux for-6.8/io_uring-2024-01-08 2024-01-11 14:19:23 -08:00
smack for-6.8/io_uring-2024-01-08 2024-01-11 14:19:23 -08:00
tomoyo exec: Check __FMODE_EXEC instead of in_execve for LSMs 2024-01-24 11:38:58 -08:00
yama lsm: mark the lsm_id variables are marked as static 2023-11-12 22:54:42 -05:00
commoncap.c lsm: mark the lsm_id variables are marked as static 2023-11-12 22:54:42 -05:00
device_cgroup.c device_cgroup: Fix kernel-doc warnings in device_cgroup 2023-06-21 09:30:49 -04:00
inode.c security: convert to new timestamp accessors 2023-10-18 14:08:31 +02:00
Kconfig mm/slab: remove HAVE_HARDENED_USERCOPY_ALLOCATOR 2023-05-24 15:38:17 +02:00
Kconfig.hardening hardening: Move BUG_ON_DATA_CORRUPTION to hardening options 2023-08-15 14:57:25 -07:00
lsm_audit.c lsm: fix a number of misspellings 2023-05-25 17:52:15 -04:00
lsm_syscalls.c LSM: Helpers for attribute names and filling lsm_ctx 2023-11-12 22:54:42 -05:00
Makefile LSM: syscalls for current process attributes 2023-11-12 22:54:42 -05:00
min_addr.c sysctl: pass kernel pointers to ->proc_handler 2020-04-27 02:07:40 -04:00
security.c lsm: fix integer overflow in lsm_set_self_attr() syscall 2024-02-14 13:53:15 -05:00