e21e52b608
This is a first pass at getting the secureboot patches working with the upstream lockdown patches that got merged. The final patch from our lockdown set is the sysrq patch which also needs work. For the present it is not applied.
44 lines
1.5 KiB
Diff
44 lines
1.5 KiB
Diff
From 70cecc97a4fc1667472224558a50dd7b6c42c789 Mon Sep 17 00:00:00 2001
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From: Robert Holmes <robeholmes@gmail.com>
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Date: Tue, 23 Apr 2019 07:39:29 +0000
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Subject: [PATCH] KEYS: Make use of platform keyring for module signature
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verify
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This patch completes commit 278311e417be ("kexec, KEYS: Make use of
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platform keyring for signature verify") which, while adding the
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platform keyring for bzImage verification, neglected to also add
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this keyring for module verification.
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As such, kernel modules signed with keys from the MokList variable
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were not successfully verified.
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Signed-off-by: Robert Holmes <robeholmes@gmail.com>
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Signed-off-by: Jeremy Cline <jcline@redhat.com>
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---
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kernel/module_signing.c | 16 ++++++++++++----
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1 file changed, 12 insertions(+), 4 deletions(-)
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diff --git a/kernel/module_signing.c b/kernel/module_signing.c
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index 9d9fc678c91d..84ad75a53c83 100644
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--- a/kernel/module_signing.c
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+++ b/kernel/module_signing.c
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@@ -38,8 +38,15 @@ int mod_verify_sig(const void *mod, struct load_info *info)
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modlen -= sig_len + sizeof(ms);
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info->len = modlen;
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- return verify_pkcs7_signature(mod, modlen, mod + modlen, sig_len,
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+ ret = verify_pkcs7_signature(mod, modlen, mod + modlen, sig_len,
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VERIFY_USE_SECONDARY_KEYRING,
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VERIFYING_MODULE_SIGNATURE,
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NULL, NULL);
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+ if (ret == -ENOKEY && IS_ENABLED(CONFIG_INTEGRITY_PLATFORM_KEYRING)) {
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+ ret = verify_pkcs7_signature(mod, modlen, mod + modlen, sig_len,
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+ VERIFY_USE_PLATFORM_KEYRING,
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+ VERIFYING_MODULE_SIGNATURE,
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+ NULL, NULL);
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+ }
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+ return ret;
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}
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--
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2.21.0
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