diff options
Diffstat (limited to 'certs/blacklist.c')
| -rw-r--r-- | certs/blacklist.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/certs/blacklist.c b/certs/blacklist.c index 486ce0dd8e9c..25094ea73600 100644 --- a/certs/blacklist.c +++ b/certs/blacklist.c @@ -307,6 +307,15 @@ static int restrict_link_for_blacklist(struct key *dest_keyring, /* * Initialise the blacklist + * + * The blacklist_init() function is registered as an initcall via + * device_initcall(). As a result if the blacklist_init() function fails for + * any reason the kernel continues to execute. While cleanly returning -ENODEV + * could be acceptable for some non-critical kernel parts, if the blacklist + * keyring fails to load it defeats the certificate/key based deny list for + * signed modules. If a critical piece of security functionality that users + * expect to be present fails to initialize, panic()ing is likely the right + * thing to do. */ static int __init blacklist_init(void) { |