From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mimi Zohar Subject: Re: [PATCH v3 4/4] ima: Differentiate auditing policy rules from "audit" actions Date: Tue, 05 Jun 2018 10:15:05 -0400 Message-ID: <1528208105.3237.155.camel@linux.vnet.ibm.com> References: <20180604205455.2325754-1-stefanb@linux.vnet.ibm.com> <20180604205455.2325754-5-stefanb@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Paul Moore , Stefan Berger Cc: linux-integrity@vger.kernel.org, linux-audit@redhat.com, sgrubb@redhat.com, linux-kernel@vger.kernel.org List-Id: linux-audit@redhat.com Hi Paul, On Mon, 2018-06-04 at 20:21 -0400, Paul Moore wrote: > On Mon, Jun 4, 2018 at 4:54 PM, Stefan Berger > wrote: > > The AUDIT_INTEGRITY_RULE is used for auditing IMA policy rules and > > the IMA "audit" policy action. This patch defines > > AUDIT_INTEGRITY_POLICY_RULE to reflect the IMA policy rules. > > > > Since we defined a new message type we can now also pass the > > audit_context and get an associated SYSCALL record. This now produces > > the following records when parsing IMA policy's rules: > > Aaand now I see you included the current->audit_context pointer I > mentioned in my comments for 3/4 ;) > > So basically this should be fine, although I should point out that you > do not need to define a new message type to associate records > together. The fact that we don't associate all connected records is > basically a bug. > > Anyway, patches 3/4 and 4/4 look good to me. Considering this is > likely going in during the *next* merge window, I would ask that you > convert from "current->audit_context" to "audit_context()" as soon as > this merge window closes. > > Thanks! Thanks, Paul.  I'd like to start queueing patches for the next open window now, instead of scrambling later.  Can I add your Ack now, and remember to make this change when rebasing? Mimi > > > type=UNKNOWN[1807] msg=audit(1527888965.738:320): action=audit \ > > func=MMAP_CHECK mask=MAY_EXEC res=1 > > type=UNKNOWN[1807] msg=audit(1527888965.738:320): action=audit \ > > func=FILE_CHECK mask=MAY_READ res=1 > > type=SYSCALL msg=audit(1527888965.738:320): arch=c000003e syscall=1 \ > > success=yes exit=17 a0=1 a1=55bcfcca9030 a2=11 a3=7fcc1b55fb38 \ > > items=0 ppid=1567 pid=1601 auid=0 uid=0 gid=0 euid=0 suid=0 \ > > fsuid=0 egid=0 sgid=0 fsgid=0 tty=tty2 ses=2 comm="echo" \ > > exe="/usr/bin/echo" \ > > subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null) > > > > Signed-off-by: Stefan Berger > > --- > > include/uapi/linux/audit.h | 1 + > > security/integrity/ima/ima_policy.c | 4 ++-- > > 2 files changed, 3 insertions(+), 2 deletions(-) > > > > diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h > > index 65d9293f1fb8..cb358551376b 100644 > > --- a/include/uapi/linux/audit.h > > +++ b/include/uapi/linux/audit.h > > @@ -148,6 +148,7 @@ > > #define AUDIT_INTEGRITY_PCR 1804 /* PCR invalidation msgs */ > > #define AUDIT_INTEGRITY_RULE 1805 /* policy rule */ > > #define AUDIT_INTEGRITY_EVM_XATTR 1806 /* New EVM-covered xattr */ > > +#define AUDIT_INTEGRITY_POLICY_RULE 1807 /* IMA policy rules */ > > > > #define AUDIT_KERNEL 2000 /* Asynchronous audit record. NOT A REQUEST. */ > > > > diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c > > index bc99713dfe57..f7230db217a7 100644 > > --- a/security/integrity/ima/ima_policy.c > > +++ b/security/integrity/ima/ima_policy.c > > @@ -652,8 +652,8 @@ static int ima_parse_rule(char *rule, struct ima_rule_entry *entry) > > bool uid_token; > > int result = 0; > > > > - ab = integrity_audit_log_start(NULL, GFP_KERNEL, > > - AUDIT_INTEGRITY_RULE); > > + ab = integrity_audit_log_start(current->audit_context, GFP_KERNEL, > > + AUDIT_INTEGRITY_POLICY_RULE); > > > > entry->uid = INVALID_UID; > > entry->fowner = INVALID_UID; > > -- > > 2.13.6 > > > From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:34360 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751652AbeFEOPX (ORCPT ); Tue, 5 Jun 2018 10:15:23 -0400 Received: from pps.filterd (m0098404.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w55EEKre103679 for ; Tue, 5 Jun 2018 10:15:23 -0400 Received: from e06smtp07.uk.ibm.com (e06smtp07.uk.ibm.com [195.75.94.103]) by mx0a-001b2d01.pphosted.com with ESMTP id 2jdu5duc37-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 05 Jun 2018 10:15:23 -0400 Received: from localhost by e06smtp07.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 5 Jun 2018 15:15:19 +0100 Subject: Re: [PATCH v3 4/4] ima: Differentiate auditing policy rules from "audit" actions From: Mimi Zohar To: Paul Moore , Stefan Berger Cc: linux-integrity@vger.kernel.org, linux-audit@redhat.com, sgrubb@redhat.com, linux-kernel@vger.kernel.org Date: Tue, 05 Jun 2018 10:15:05 -0400 In-Reply-To: References: <20180604205455.2325754-1-stefanb@linux.vnet.ibm.com> <20180604205455.2325754-5-stefanb@linux.vnet.ibm.com> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Message-Id: <1528208105.3237.155.camel@linux.vnet.ibm.com> Sender: linux-integrity-owner@vger.kernel.org List-ID: Hi Paul, On Mon, 2018-06-04 at 20:21 -0400, Paul Moore wrote: > On Mon, Jun 4, 2018 at 4:54 PM, Stefan Berger > wrote: > > The AUDIT_INTEGRITY_RULE is used for auditing IMA policy rules and > > the IMA "audit" policy action. This patch defines > > AUDIT_INTEGRITY_POLICY_RULE to reflect the IMA policy rules. > > > > Since we defined a new message type we can now also pass the > > audit_context and get an associated SYSCALL record. This now produces > > the following records when parsing IMA policy's rules: > > Aaand now I see you included the current->audit_context pointer I > mentioned in my comments for 3/4 ;) > > So basically this should be fine, although I should point out that you > do not need to define a new message type to associate records > together. The fact that we don't associate all connected records is > basically a bug. > > Anyway, patches 3/4 and 4/4 look good to me. Considering this is > likely going in during the *next* merge window, I would ask that you > convert from "current->audit_context" to "audit_context()" as soon as > this merge window closes. > > Thanks! Thanks, Paul. I'd like to start queueing patches for the next open window now, instead of scrambling later. Can I add your Ack now, and remember to make this change when rebasing? Mimi > > > type=UNKNOWN[1807] msg=audit(1527888965.738:320): action=audit \ > > func=MMAP_CHECK mask=MAY_EXEC res=1 > > type=UNKNOWN[1807] msg=audit(1527888965.738:320): action=audit \ > > func=FILE_CHECK mask=MAY_READ res=1 > > type=SYSCALL msg=audit(1527888965.738:320): arch=c000003e syscall=1 \ > > success=yes exit=17 a0=1 a1=55bcfcca9030 a2=11 a3=7fcc1b55fb38 \ > > items=0 ppid=1567 pid=1601 auid=0 uid=0 gid=0 euid=0 suid=0 \ > > fsuid=0 egid=0 sgid=0 fsgid=0 tty=tty2 ses=2 comm="echo" \ > > exe="/usr/bin/echo" \ > > subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null) > > > > Signed-off-by: Stefan Berger > > --- > > include/uapi/linux/audit.h | 1 + > > security/integrity/ima/ima_policy.c | 4 ++-- > > 2 files changed, 3 insertions(+), 2 deletions(-) > > > > diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h > > index 65d9293f1fb8..cb358551376b 100644 > > --- a/include/uapi/linux/audit.h > > +++ b/include/uapi/linux/audit.h > > @@ -148,6 +148,7 @@ > > #define AUDIT_INTEGRITY_PCR 1804 /* PCR invalidation msgs */ > > #define AUDIT_INTEGRITY_RULE 1805 /* policy rule */ > > #define AUDIT_INTEGRITY_EVM_XATTR 1806 /* New EVM-covered xattr */ > > +#define AUDIT_INTEGRITY_POLICY_RULE 1807 /* IMA policy rules */ > > > > #define AUDIT_KERNEL 2000 /* Asynchronous audit record. NOT A REQUEST. */ > > > > diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c > > index bc99713dfe57..f7230db217a7 100644 > > --- a/security/integrity/ima/ima_policy.c > > +++ b/security/integrity/ima/ima_policy.c > > @@ -652,8 +652,8 @@ static int ima_parse_rule(char *rule, struct ima_rule_entry *entry) > > bool uid_token; > > int result = 0; > > > > - ab = integrity_audit_log_start(NULL, GFP_KERNEL, > > - AUDIT_INTEGRITY_RULE); > > + ab = integrity_audit_log_start(current->audit_context, GFP_KERNEL, > > + AUDIT_INTEGRITY_POLICY_RULE); > > > > entry->uid = INVALID_UID; > > entry->fowner = INVALID_UID; > > -- > > 2.13.6 > > >