From: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
To: linux-integrity@vger.kernel.org
Cc: linux-security-module@vger.kernel.org, keyrings@vger.kernel.org,
linux-crypto@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-kernel@vger.kernel.org,
Mimi Zohar <zohar@linux.vnet.ibm.com>,
Dmitry Kasatkin <dmitry.kasatkin@gmail.com>,
James Morris <james.l.morris@oracle.com>,
"Serge E. Hallyn" <serge@hallyn.com>,
David Howells <dhowells@redhat.com>,
David Woodhouse <dwmw2@infradead.org>,
Jessica Yu <jeyu@redhat.com>,
Rusty Russell <rusty@rustcorp.com.au>,
Herbert Xu <herbert@gondor.apana.org.au>,
"David S. Miller" <davem@davemloft.net>,
"AKASHI, Takahiro" <takahiro.akashi@linaro.org>,
Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Subject: [PATCH v5 09/18] ima: Don't pass xattr value to EVM xattr verification.
Date: Tue, 17 Oct 2017 22:53:22 -0200 [thread overview]
Message-ID: <20171018005331.2688-10-bauerman@linux.vnet.ibm.com> (raw)
In-Reply-To: <20171018005331.2688-1-bauerman@linux.vnet.ibm.com>
The patch implementing modsig support will retry verifying the xattr
signature if the modsig verification fails, and if we have already passed
the modsig as the xattr_value we'll have problems if we pass the xattr sig
in the second call to evm_verifyxattr.
Since this is an optimization and not actually required, just don't do it.
Suggested-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
---
security/integrity/ima/ima_appraise.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/security/integrity/ima/ima_appraise.c b/security/integrity/ima/ima_appraise.c
index 091977c8ec40..58e147049e98 100644
--- a/security/integrity/ima/ima_appraise.c
+++ b/security/integrity/ima/ima_appraise.c
@@ -229,7 +229,7 @@ int ima_appraise_measurement(enum ima_hooks func,
goto out;
}
- status = evm_verifyxattr(dentry, XATTR_NAME_IMA, xattr_value, rc, iint);
+ status = evm_verifyxattr(dentry, XATTR_NAME_IMA, NULL, 0, iint);
switch (status) {
case INTEGRITY_PASS:
case INTEGRITY_UNKNOWN:
next prev parent reply other threads:[~2017-10-18 0:58 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-18 0:53 [PATCH v5 00/18] Appended signatures support for IMA appraisal Thiago Jung Bauermann
2017-10-18 0:53 ` [PATCH v5 01/18] ima: Remove redundant conditional operator Thiago Jung Bauermann
2017-10-18 0:53 ` [PATCH v5 02/18] ima: Remove some superfluous parentheses Thiago Jung Bauermann
2017-10-18 0:53 ` [PATCH v5 03/18] evm, ima: Remove " Thiago Jung Bauermann
2017-10-18 0:53 ` [PATCH v5 04/18] evm, ima: Remove more " Thiago Jung Bauermann
2017-10-18 0:53 ` [PATCH v5 05/18] ima: Simplify ima_eventsig_init Thiago Jung Bauermann
2017-10-18 0:53 ` [PATCH v5 06/18] ima: Improvements in ima_appraise_measurement Thiago Jung Bauermann
2017-10-18 0:53 ` [PATCH v5 07/18] integrity: Introduce struct evm_xattr Thiago Jung Bauermann
2017-10-18 0:53 ` [PATCH v5 08/18] integrity: Select CONFIG_KEYS instead of depending on it Thiago Jung Bauermann
2017-10-18 0:53 ` Thiago Jung Bauermann [this message]
2017-10-18 0:53 ` [PATCH v5 10/18] ima: Store measurement after appraisal Thiago Jung Bauermann
2017-10-18 0:53 ` [PATCH v5 11/18] ima: Export func_tokens Thiago Jung Bauermann
2017-10-18 0:53 ` [PATCH v5 12/18] MODSIGN: Export module signature definitions Thiago Jung Bauermann
2017-10-26 20:12 ` Mimi Zohar
2017-10-26 22:47 ` Thiago Jung Bauermann
2017-10-26 23:13 ` Mimi Zohar
2017-10-18 0:53 ` [PATCH v5 13/18] PKCS#7: Introduce pkcs7_get_message_sig and verify_pkcs7_message_sig Thiago Jung Bauermann
2017-10-26 20:12 ` Mimi Zohar
2017-10-18 0:53 ` [PATCH v5 14/18] integrity: Introduce integrity_keyring_from_id Thiago Jung Bauermann
2017-10-18 0:53 ` [PATCH v5 15/18] ima: Add modsig appraise_type option for module-style appended signatures Thiago Jung Bauermann
2017-10-18 0:53 ` [PATCH v5 16/18] ima: Add functions to read and verify a modsig signature Thiago Jung Bauermann
2017-10-18 0:53 ` [PATCH v5 17/18] ima: Implement support for module-style appended signatures Thiago Jung Bauermann
2017-10-31 13:31 ` Mimi Zohar
2017-10-18 0:53 ` [PATCH v5 18/18] ima: Write modsig to the measurement list Thiago Jung Bauermann
2017-10-26 20:07 ` Mimi Zohar
2017-10-26 22:02 ` Thiago Jung Bauermann
2017-10-26 20:53 ` [PATCH v5 00/18] Appended signatures support for IMA appraisal Mimi Zohar
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20171018005331.2688-10-bauerman@linux.vnet.ibm.com \
--to=bauerman@linux.vnet.ibm.com \
--cc=davem@davemloft.net \
--cc=dhowells@redhat.com \
--cc=dmitry.kasatkin@gmail.com \
--cc=dwmw2@infradead.org \
--cc=herbert@gondor.apana.org.au \
--cc=james.l.morris@oracle.com \
--cc=jeyu@redhat.com \
--cc=keyrings@vger.kernel.org \
--cc=linux-crypto@vger.kernel.org \
--cc=linux-integrity@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-security-module@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=rusty@rustcorp.com.au \
--cc=serge@hallyn.com \
--cc=takahiro.akashi@linaro.org \
--cc=zohar@linux.vnet.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).