[PATCH 03/27] Enforce module signatures if the kernel is locked down

[David Howells]

If the kernel is locked down, require that all modules have valid
signatures that we can verify.

Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
---

 kernel/module.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/module.c b/kernel/module.c
index de66ec825992..3d9a3270c179 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2781,7 +2781,8 @@ static int module_sig_check(struct load_info *info, int flags)
 	}
 
 	/* Not having a signature is only an error if we're strict. */
-	if (err == -ENOKEY && !sig_enforce)
+	if (err == -ENOKEY && !sig_enforce &&
+	    !kernel_is_locked_down("Loading of unsigned modules"))
 		err = 0;
 
 	return err;