* [PATCH] ima: log message to module appraisal error
@ 2017-12-04 19:54 Bruno E. O. Meneguele
2017-12-04 20:17 ` Bruno E. O. Meneguele
0 siblings, 1 reply; 2+ messages in thread
From: Bruno E. O. Meneguele @ 2017-12-04 19:54 UTC (permalink / raw)
To: Mimi Zohar, Dmitry Kasatkin
Cc: linux-integrity, linux-ima-devel, linux-security-module,
linux-kernel
Simple but useful message log to the user in case of module appraise is
forced and fails due to the lack of file descriptor, that might be
caused by kmod calls to compressed modules.
Signed-off-by: Bruno E. O. Meneguele <bmeneguele@gmail.com>
---
security/integrity/ima/ima_main.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index 770654694efc..95ec39910058 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -366,8 +366,12 @@ int ima_read_file(struct file *file, enum kernel_read_file_id read_id)
if (!file && read_id == READING_MODULE) {
if (!sig_enforce && (ima_appraise & IMA_APPRAISE_MODULES) &&
- (ima_appraise & IMA_APPRAISE_ENFORCE))
+ (ima_appraise & IMA_APPRAISE_ENFORCE)) {
+ pr_err("impossible to appraise a module without a file \
+ descriptor. sig_enforce kernel parameter might \
+ help\n");
return -EACCES; /* INTEGRITY_UNKNOWN */
+ }
return 0; /* We rely on module signature checking */
}
return 0;
--
2.14.3
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] ima: log message to module appraisal error
2017-12-04 19:54 [PATCH] ima: log message to module appraisal error Bruno E. O. Meneguele
@ 2017-12-04 20:17 ` Bruno E. O. Meneguele
0 siblings, 0 replies; 2+ messages in thread
From: Bruno E. O. Meneguele @ 2017-12-04 20:17 UTC (permalink / raw)
To: Bruno E. O. Meneguele
Cc: Mimi Zohar, Dmitry Kasatkin, linux-integrity, linux-ima-devel,
linux-security-module, linux-kernel
[-- Attachment #1: Type: multipart/signed, Size: 1708 bytes --]
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