linux/security/keys
David Safford dda5384313 KEYS: trusted: tpm2: Fix migratable logic
When creating (sealing) a new trusted key, migratable
trusted keys have the FIXED_TPM and FIXED_PARENT attributes
set, and non-migratable keys don't. This is backwards, and
also causes creation to fail when creating a migratable key
under a migratable parent. (The TPM thinks you are trying to
seal a non-migratable blob under a migratable parent.)

The following simple patch fixes the logic, and has been
tested for all four combinations of migratable and non-migratable
trusted keys and parent storage keys. With this logic, you will
get a proper failure if you try to create a non-migratable
trusted key under a migratable parent storage key, and all other
combinations work correctly.

Cc: stable@vger.kernel.org # v5.13+
Fixes: e5fb5d2c5a ("security: keys: trusted: Make sealed key properly interoperable")
Signed-off-by: David Safford <david.safford@gmail.com>
Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2022-06-08 14:12:13 +03:00
..
encrypted-keys KEYS: encrypted: Instantiate key with user-provided decrypted data 2022-02-21 19:47:45 -05:00
trusted-keys KEYS: trusted: tpm2: Fix migratable logic 2022-06-08 14:12:13 +03:00
big_key.c big_keys: Use struct for internal payload 2022-05-16 16:02:21 -07:00
compat_dh.c
compat.c security/keys: remove compat_keyctl_instantiate_key_iov 2020-10-03 00:02:16 -04:00
dh.c crypto: dh - constify struct dh's pointer members 2022-03-03 10:47:50 +12:00
gc.c watch_queue: Add a key/keyring notification facility 2020-05-19 15:19:06 +01:00
internal.h security/keys: remove compat_keyctl_instantiate_key_iov 2020-10-03 00:02:16 -04:00
Kconfig KEYS: trusted: allow use of TEE as backend without TCG_TPM support 2022-05-23 18:47:50 +03:00
key.c certs: Fix blacklist flag type confusion 2021-01-21 16:16:10 +00:00
keyctl_pkey.c KEYS: fix length validation in keyctl_pkey_params_get_2() 2022-03-08 10:33:18 +02:00
keyctl.c security: keys: delete repeated words in comments 2021-01-21 16:16:09 +00:00
keyring.c security: keys: delete repeated words in comments 2021-01-21 16:16:09 +00:00
Makefile
permission.c keys: Make the KEY_NEED_* perms an enum rather than a mask 2020-05-19 15:42:22 +01:00
persistent.c
proc.c keys: Fix proc_keys_next to increase position index 2020-04-16 10:10:50 -07:00
process_keys.c ucounts: Move get_ucounts from cred_alloc_blank to key_change_session_keyring 2021-10-20 10:34:20 -05:00
request_key_auth.c KEYS: Don't write out to userspace while holding key semaphore 2020-03-29 12:40:41 +01:00
request_key.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
sysctl.c
user_defined.c mm, treewide: rename kzfree() to kfree_sensitive() 2020-08-07 11:33:22 -07:00