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authorBruno E. O. Meneguele <bmeneguele@gmail.com>2017-12-05 16:35:32 +0300
committerMimi Zohar <zohar@linux.vnet.ibm.com>2017-12-18 17:43:48 +0300
commit9c655be0644429b71396347887b43676ab4f6781 (patch)
tree8c4cf2283c3fa79d712e4119d3684f08dac2d73c /security/integrity/ima
parent4e8581eefe720f8d990b892a8c9d298875e1a299 (diff)
downloadlinux-9c655be0644429b71396347887b43676ab4f6781.tar.xz
ima: log message to module appraisal error
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 <brdeoliv@redhat.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Diffstat (limited to 'security/integrity/ima')
-rw-r--r--security/integrity/ima/ima_main.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index 0abc7d0db90b..21330d0455b0 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -404,8 +404,10 @@ 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;