kevin/linux
1
Fork 0
Code

ipe: fallback to platform keyring also if key in trusted keyring is rejected

Browse Source 
If enabled, we fallback to the platform keyring if the trusted keyring
doesn't have the key used to sign the ipe policy. But if pkcs7_verify()
rejects the key for other reasons, such as usage restrictions, we do not
fallback. Do so, following the same change in dm-verity.

Signed-off-by: Luca Boccassi <bluca@debian.org>
Suggested-by: Serge Hallyn <serge@hallyn.com>
[FW: fixed some line length issues and a typo in the commit message]
Signed-off-by: Fan Wu <wufan@kernel.org>
This commit is contained in:
Luca Boccassi 2024-09-27 10:23:44 +02:00 committed by Fan Wu
parent 02e2f9aa33
commit f40998a8e6
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
security/ipe/policy.c
View File

@ -178,7 +178,7 @@ struct ipe_policy *ipe_new_policy(const char *text, size_t textlen,
VERIFYING_UNSPECIFIED_SIGNATURE,
set_pkcs7_data, new);
#ifdef CONFIG_IPE_POLICY_SIG_PLATFORM_KEYRING
if (rc == -ENOKEY)
if (rc == -ENOKEY || rc == -EKEYREJECTED)
rc = verify_pkcs7_signature(NULL, 0, new->pkcs7, pkcs7len,
VERIFY_USE_PLATFORM_KEYRING,
VERIFYING_UNSPECIFIED_SIGNATURE,