From: Mimi Zohar <zohar@linux.ibm.com>
To: linux-integrity@vger.kernel.org
Cc: Mimi Zohar <zohar@linux.ibm.com>,
linux-security-module@vger.kernel.org, linux-efi@vger.kernel.org,
linux-kernel@vger.kernel.org, dhowells@redhat.com,
jforbes@redhat.com, seth.forshee@canonical.com,
kexec@lists.infradead.org, Nayna Jain <nayna@linux.ibm.com>
Subject: [PATCH 1/3] ima: add error mesage to kexec_load
Date: Mon, 19 Nov 2018 14:56:09 -0500 [thread overview]
Message-ID: <1542657371-7019-2-git-send-email-zohar@linux.ibm.com> (raw)
In-Reply-To: <1542657371-7019-1-git-send-email-zohar@linux.ibm.com>
Reject the kexec_load syscall with some indication of the problem.
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
---
security/integrity/ima/ima_main.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index 41e4771980d5..df0b2ee49fa2 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -513,8 +513,10 @@ int ima_load_data(enum kernel_load_data_id id)
switch (id) {
case LOADING_KEXEC_IMAGE:
if (IS_ENABLED(CONFIG_KEXEC_VERIFY_SIG)
- && arch_ima_get_secureboot())
+ && arch_ima_get_secureboot()) {
+ pr_err("impossible to appraise a kernel image without a file descriptor; try using kexec_file_load syscall.\n");
return -EACCES;
+ }
if (ima_enforce && (ima_appraise & IMA_APPRAISE_KEXEC)) {
pr_err("impossible to appraise a kernel image without a file descriptor; try using kexec_file_load syscall.\n");
--
2.7.5
next prev parent reply other threads:[~2018-11-19 19:56 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-19 19:56 [PATCH 0/3] selftest/ima: fail kexec_load syscall Mimi Zohar
2018-11-19 19:56 ` Mimi Zohar [this message]
2018-11-19 19:56 ` [PATCH 2/3] selftests/ima: kexec_load syscall test Mimi Zohar
2018-11-19 19:56 ` [PATCH 3/3] x86/ima: retry detecting secure boot mode Mimi Zohar
2019-03-07 22:28 ` Matthew Garrett
[not found] ` <CAFbkSA39RwB+E4SaG_ueu-_B=y7JytEYKw1+eXNQ_eCuMfnv=g@mail.gmail.com>
2019-03-07 22:44 ` Matthew Garrett
2019-03-07 22:48 ` Mimi Zohar
2019-03-07 22:50 ` Matthew Garrett
2019-03-08 13:39 ` Mimi Zohar
2019-03-08 17:51 ` Matthew Garrett
2019-03-08 18:43 ` Mimi Zohar
2019-03-08 20:22 ` Matthew Garrett
2019-03-11 16:54 ` Mimi Zohar
2019-03-11 19:20 ` Matthew Garrett
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