Messages in this thread Patch in this message | | | Date | Fri, 23 Oct 2020 16:37:57 +0200 | Subject | [PATCH] vsock: use ns_capable_noaudit() on socket create | From | Jeff Vander Stoep <> |
| |
During __vsock_create() CAP_NET_ADMIN is used to determine if the vsock_sock->trusted should be set to true. This value is used later for determing if a remote connection should be allowed to connect to a restricted VM. Unfortunately, if the caller doesn't have CAP_NET_ADMIN, an audit message such as an selinux denial is generated even if the caller does not want a trusted socket.
Logging errors on success is confusing. To avoid this, switch the capable(CAP_NET_ADMIN) check to the noaudit version.
Reported-by: Roman Kiryanov <rkir@google.com> https://android-review.googlesource.com/c/device/generic/goldfish/+/1468545/ Signed-off-by: Jeff Vander Stoep <jeffv@google.com> --- net/vmw_vsock/af_vsock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index 9e93bc201cc0..b4d7b8aba003 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -739,7 +739,7 @@ static struct sock *__vsock_create(struct net *net, vsk->buffer_min_size = psk->buffer_min_size; vsk->buffer_max_size = psk->buffer_max_size; } else { - vsk->trusted = capable(CAP_NET_ADMIN); + vsk->trusted = ns_capable_noaudit(&init_user_ns, CAP_NET_ADMIN); vsk->owner = get_current_cred(); vsk->connect_timeout = VSOCK_DEFAULT_CONNECT_TIMEOUT; vsk->buffer_size = VSOCK_DEFAULT_BUFFER_SIZE; -- 2.29.0.rc2.309.g374f81d7ae-goog
| |