diff mbox series

[v3,13/19] module: Call security_kernel_post_load_data()

Message ID 20200724213640.389191-14-keescook@chromium.org (mailing list archive)
State New
Headers show
Series Introduce partial kernel_read_file() support | expand

Commit Message

Kees Cook July 24, 2020, 9:36 p.m. UTC 
Now that there is an API for checking loaded contents for modules
loaded without a file, call into the LSM hooks.

Cc: Jessica Yu <jeyu@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
---
 kernel/module.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/kernel/module.c b/kernel/module.c
index d56cb34d9a2f..90a4788dff9d 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2967,7 +2967,7 @@  static int copy_module_from_user(const void __user *umod, unsigned long len,
 	if (info->len < sizeof(*(info->hdr)))
 		return -ENOEXEC;
 
-	err = security_kernel_load_data(LOADING_MODULE, false);
+	err = security_kernel_load_data(LOADING_MODULE, true);
 	if (err)
 		return err;
 
@@ -2977,11 +2977,17 @@  static int copy_module_from_user(const void __user *umod, unsigned long len,
 		return -ENOMEM;
 
 	if (copy_chunked_from_user(info->hdr, umod, info->len) != 0) {
-		vfree(info->hdr);
-		return -EFAULT;
+		err = -EFAULT;
+		goto out;
 	}
 
-	return 0;
+	err = security_kernel_post_load_data((char *)info->hdr, info->len,
+					     LOADING_MODULE);
+out:
+	if (err)
+		vfree(info->hdr);
+
+	return err;
 }
 
 static void free_copy(struct load_info *info)