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authorRichard Guy Briggs <rgb@redhat.com>2017-02-04 13:10:38 -0500
committerPaul Moore <paul@paul-moore.com>2017-02-13 16:17:13 -0500
commitca86cad7380e373fa17bc0ee8aff121380323e69 (patch)
tree68407211f533b1e8c30ce3ffc60206347d3811af /kernel
parent62bc306e2083436675e33b5bdeb6a77907d35971 (diff)
audit: log module name on init_module
This adds a new auxiliary record MODULE_INIT to the SYSCALL event. We get finit_module for free since it made most sense to hook this in to load_module(). https://github.com/linux-audit/audit-kernel/issues/7 https://github.com/linux-audit/audit-kernel/wiki/RFE-Module-Load-Record-Format Signed-off-by: Richard Guy Briggs <rgb@redhat.com> Acked-by: Jessica Yu <jeyu@redhat.com> [PM: corrected links in the commit description] Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/audit.h3
-rw-r--r--kernel/auditsc.c14
-rw-r--r--kernel/module.c5
3 files changed, 21 insertions, 1 deletions
diff --git a/kernel/audit.h b/kernel/audit.h
index 431444c3708b..144b7ebd2deb 100644
--- a/kernel/audit.h
+++ b/kernel/audit.h
@@ -199,6 +199,9 @@ struct audit_context {
struct {
int argc;
} execve;
+ struct {
+ char *name;
+ } module;
};
int fds[2];
struct audit_proctitle proctitle;
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index bb5f504592c6..bde3aac4deed 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -1268,6 +1268,11 @@ static void show_special(struct audit_context *context, int *call_panic)
case AUDIT_EXECVE: {
audit_log_execve_info(context, &ab);
break; }
+ case AUDIT_KERN_MODULE:
+ audit_log_format(ab, "name=");
+ audit_log_untrustedstring(ab, context->module.name);
+ kfree(context->module.name);
+ break;
}
audit_log_end(ab);
}
@@ -2368,6 +2373,15 @@ void __audit_mmap_fd(int fd, int flags)
context->type = AUDIT_MMAP;
}
+void __audit_log_kern_module(char *name)
+{
+ struct audit_context *context = current->audit_context;
+
+ context->module.name = kmalloc(strlen(name) + 1, GFP_KERNEL);
+ strcpy(context->module.name, name);
+ context->type = AUDIT_KERN_MODULE;
+}
+
static void audit_log_task(struct audit_buffer *ab)
{
kuid_t auid, uid;
diff --git a/kernel/module.c b/kernel/module.c
index 529efae9f481..5432dbedf8cf 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -61,6 +61,7 @@
#include <linux/pfn.h>
#include <linux/bsearch.h>
#include <linux/dynamic_debug.h>
+#include <linux/audit.h>
#include <uapi/linux/module.h>
#include "module-internal.h"
@@ -3593,6 +3594,8 @@ static int load_module(struct load_info *info, const char __user *uargs,
goto free_copy;
}
+ audit_log_kern_module(mod->name);
+
/* Reserve our place in the list. */
err = add_unformed_module(mod);
if (err)
@@ -3681,7 +3684,7 @@ static int load_module(struct load_info *info, const char __user *uargs,
mod->name, after_dashes);
}
- /* Link in to syfs. */
+ /* Link in to sysfs. */
err = mod_sysfs_setup(mod, info, mod->kp, mod->num_kp);
if (err < 0)
goto coming_cleanup;