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linux/security
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Roberto Sassu 5b6eac63d1 ima: Reset IMA_NONACTION_RULE_FLAGS after post_setattr 
commit 57a0ef02fe upstream.

Commit 0d73a55208 ("ima: re-introduce own integrity cache lock")
mistakenly reverted the performance improvement introduced in commit
42a4c60319 ("ima: fix ima_inode_post_setattr"). The unused bit mask was
subsequently removed by commit 11c60f23ed ("integrity: Remove unused
macro IMA_ACTION_RULE_FLAGS").

Restore the performance improvement by introducing the new mask
IMA_NONACTION_RULE_FLAGS, equal to IMA_NONACTION_FLAGS without
IMA_NEW_FILE, which is not a rule-specific flag.

Finally, reset IMA_NONACTION_RULE_FLAGS instead of IMA_NONACTION_FLAGS in
process_measurement(), if the IMA_CHANGE_ATTR atomic flag is set (after
file metadata modification).

With this patch, new files for which metadata were modified while they are
still open, can be reopened before the last file close (when security.ima
is written), since the IMA_NEW_FILE flag is not cleared anymore. Otherwise,
appraisal fails because security.ima is missing (files with IMA_NEW_FILE
set are an exception).

Cc: stable@vger.kernel.org # v4.16.x
Fixes: 0d73a55208 ("ima: re-introduce own integrity cache lock")
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-03-13 12:58:40 +01:00
..
apparmor apparmor: test: Fix memory leak for aa_unpack_strdup() 2024-12-09 10:32:45 +01:00
bpf bpf: lsm: Set bpf_lsm_blob_sizes.lbs_task to 0 2024-10-04 16:30:02 +02:00
integrity ima: Reset IMA_NONACTION_RULE_FLAGS after post_setattr 2025-03-13 12:58:40 +01:00
keys security/keys: fix slab-out-of-bounds in key_task_permission 2024-11-14 13:19:30 +01:00
landlock landlock: Handle weird files 2025-02-08 09:51:58 +01:00
loadpin LoadPin: Annotate struct dm_verity_loadpin_trusted_root_digest with __counted_by 2023-08-25 16:07:30 -07:00
lockdown selinux: remove the runtime disable functionality 2023-03-20 12:34:23 -04:00
safesetid safesetid: check size of policy writes 2025-02-17 09:40:06 +01:00
selinux selinux: ignore unknown extended permissions 2025-01-09 13:31:54 +01:00
smack smackfs: Use rcu_assign_pointer() to ensure safe assignment in smk_set_cipso 2024-10-04 16:29:20 +02:00
tomoyo tomoyo: don't emit warning in tomoyo_write_control() 2025-02-17 09:40:07 +01:00
yama sysctl-6.4-rc1 2023-04-27 16:52:33 -07:00
commoncap.c lsm: constify the 'target' parameter in security_capget() 2023-08-08 16:48:47 -04:00
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 ctime accessor functions 2023-07-24 10:30:08 +02:00
Kconfig proc: add config & param to block forcing mem writes 2024-10-10 11:57:27 +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
Makefile security: remove unneeded subdir-$(CONFIG_...) 2021-09-03 08:17:20 +09:00
min_addr.c sysctl: pass kernel pointers to ->proc_handler 2020-04-27 02:07:40 -04:00
security.c evm: don't copy up 'security.evm' xattr 2024-08-29 17:33:31 +02:00