| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.3 052/200] integrity: prevent loading untrusted certificates on the IMA trusted keyring | Date | Sun, 14 Feb 2016 14:20:59 -0800 |
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4.3-stable review patch. If anyone has any objections, please let me know.
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From: Dmitry Kasatkin <dmitry.kasatkin@gmail.com>
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@huawei.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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",
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