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| author | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2015-11-10 09:00:38 -0500 |
|---|---|---|
| committer | Oleksandr Suvorov <oleksandr.suvorov@toradex.com> | 2020-05-25 13:57:21 +0300 |
| commit | cfb7de7f8fbcb7f274453d06387e857ac5590f6d (patch) | |
| tree | 8493d0706a1dbf00b9dfff92007051dec72ef0bd | |
| parent | 4e55d7920b094ef7966b38fdfebb5dd30ca5eeec (diff) | |
IMA: prevent keys on the .ima_blacklist from being removed
commit 501f1bde66525f94403a5b78832a9218ef9b1c14 upstream
Set the KEY_FLAGS_KEEP on the .ima_blacklist to prevent userspace
from removing keys from the keyring.
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
| -rw-r--r-- | security/integrity/ima/ima_mok.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/security/integrity/ima/ima_mok.c b/security/integrity/ima/ima_mok.c index 18e37f57f512..8dad9a2b8e47 100644 --- a/security/integrity/ima/ima_mok.c +++ b/security/integrity/ima/ima_mok.c @@ -47,7 +47,9 @@ __init int ima_mok_init(void) if (IS_ERR(ima_mok_keyring) || IS_ERR(ima_blacklist_keyring)) panic("Can't allocate IMA MOK or blacklist keyrings."); set_bit(KEY_FLAG_TRUSTED_ONLY, &ima_mok_keyring->flags); + set_bit(KEY_FLAG_TRUSTED_ONLY, &ima_blacklist_keyring->flags); + set_bit(KEY_FLAG_KEEP, &ima_blacklist_keyring->flags); return 0; } |