linux-kernel - [PATCH v2] modsign: use all trusted keys to verify module signature

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Message-Id: <20181106232130.33932-1-mikewu@google.com>
Date:   Tue,  6 Nov 2018 15:21:30 -0800
From:   Ke Wu <mikewu@...gle.com>
To:     Jessica Yu <jeyu@...nel.org>, David Howells <dhowells@...hat.com>
Cc:     Ke Wu <mikewu@...gle.com>, linux-kernel@...r.kernel.org
Subject: [PATCH v2] modsign: use all trusted keys to verify module signature

Make mod_verify_sig to use all trusted keys. This allows keys in
secondary_trusted_keys to be used to verify PKCS#7 signature on a
kernel module.

Signed-off-by: Ke Wu <mikewu@...gle.com>
---
Changelog since v1:
- Use VERIFY_USE_SECONDARY_KEYRING rather than (void *)1UL

 kernel/module_signing.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/module_signing.c b/kernel/module_signing.c
index f2075ce8e4b3..6b9a926fd86b 100644
--- a/kernel/module_signing.c
+++ b/kernel/module_signing.c
@@ -83,6 +83,7 @@ int mod_verify_sig(const void *mod, struct load_info *info)
 	}
 
 	return verify_pkcs7_signature(mod, modlen, mod + modlen, sig_len,
-				      NULL, VERIFYING_MODULE_SIGNATURE,
+				      VERIFY_USE_SECONDARY_KEYRING,
+				      VERIFYING_MODULE_SIGNATURE,
 				      NULL, NULL);
 }
-- 
2.19.1.930.g4563a0d9d0-goog