apparmor/kernel-patches/v4.13/0001-UBUNTU-SAUCE-efi-lockdown-MODSIGN-Fix-module-signatu.patch
John Johansen 6260deec9a Add the patches for 4.13 and 4.14. These are based on security-next for 4.14
The old out of tree patchseries has been completely dropped. v4.13
has most of the newer apparmor 3.x code in it. v4.14 has the rest except
the af_unix mediation which is included as the last patch
2017-09-11 09:16:39 -07:00

41 lines
1.6 KiB
Diff

From 00c72bc198aa85e5da02de2c0c4cc423c82a54f1 Mon Sep 17 00:00:00 2001
From: Fedora Kernel Team <kernel-team@fedoraproject.org>
Date: Thu, 3 Aug 2017 13:46:51 -0500
Subject: [PATCH 01/17] UBUNTU: SAUCE: (efi-lockdown) MODSIGN: Fix module
signature verification
BugLink: http://bugs.launchpad.net/bugs/1712168
Currently mod_verify_sig() calls verify_pkcs_7_signature() with
trusted_keys=NULL, which causes only the builtin keys to be used
to verify the signature. This breaks self-signing of modules with
a MOK, as the MOK is loaded into the secondary trusted keyring.
Fix this by passing the spacial value trusted_keys=(void *)1UL,
which tells verify_pkcs_7_signature() to use the secondary
keyring instead.
(cherry picked from commit cff4523d65b848f9c41c9e998a735ae2a820da2d
git://git.kernel.org/pub/scm/linux/kernel/git/jwboyer/fedora.git)
[ saf: Taken from fedora commit without authorship information or much
of a commit message; modified so that commit will describe the
problem being fixed. ]
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
---
kernel/module_signing.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/module_signing.c b/kernel/module_signing.c
index 937c844bee4a..d3d6f95a96b4 100644
--- a/kernel/module_signing.c
+++ b/kernel/module_signing.c
@@ -81,6 +81,6 @@ int mod_verify_sig(const void *mod, unsigned long *_modlen)
}
return verify_pkcs7_signature(mod, modlen, mod + modlen, sig_len,
- NULL, VERIFYING_MODULE_SIGNATURE,
+ (void *)1UL, VERIFYING_MODULE_SIGNATURE,
NULL, NULL);
}
--
2.11.0