This is a note to let you know that I've just added the patch titled
integrity: prevent loading untrusted certificates on the IMA trusted keyring
to the 4.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
integrity-prevent-loading-untrusted-certificates-on-the-ima-trusted-keyring.patch
and it can be found in the queue-4.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 72e1eed8abb11c79749266d433c817ce36732893 Mon Sep 17 00:00:00 2001
From: Dmitry Kasatkin <dmitry.kasatkin@xxxxxxxxx>
Date: Thu, 10 Sep 2015 22:06:15 +0300
Subject: integrity: prevent loading untrusted certificates on the IMA trusted keyring
From: Dmitry Kasatkin <dmitry.kasatkin@xxxxxxxxx>
commit 72e1eed8abb11c79749266d433c817ce36732893 upstream.
If IMA_LOAD_X509 is enabled, either directly or indirectly via
IMA_APPRAISE_SIGNED_INIT, certificates are loaded onto the IMA
trusted keyring by the kernel via key_create_or_update(). When
the KEY_ALLOC_TRUSTED flag is provided, certificates are loaded
without first verifying the certificate is properly signed by a
trusted key on the system keyring. This patch removes the
KEY_ALLOC_TRUSTED flag.
Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@xxxxxxxxxx>
Signed-off-by: Mimi Zohar <zohar@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
security/integrity/digsig.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/security/integrity/digsig.c
+++ b/security/integrity/digsig.c
@@ -105,7 +105,7 @@ int __init integrity_load_x509(const uns
rc,
((KEY_POS_ALL & ~KEY_POS_SETATTR) |
KEY_USR_VIEW | KEY_USR_READ),
- KEY_ALLOC_NOT_IN_QUOTA | KEY_ALLOC_TRUSTED);
+ KEY_ALLOC_NOT_IN_QUOTA);
if (IS_ERR(key)) {
rc = PTR_ERR(key);
pr_err("Problem loading X.509 certificate (%d): %s\n",
Patches currently in stable-queue which might be from dmitry.kasatkin@xxxxxxxxx are
queue-4.3/integrity-prevent-loading-untrusted-certificates-on-the-ima-trusted-keyring.patch
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