[PATCH] selinux: Allow passt to talk over unconfined_t UNIX domain socket for --fd

[PATCH] selinux: Allow passt to talk over unconfined_t UNIX domain socket for --fd

[Stefano Brivio]

If passt is started with --fd to talk over a pre-opened UNIX domain
socket, we don't really know what label might be associated to it,
but at least for an unconfined_t socket, this bit of policy wouldn't
belong to anywhere else: enable that here.

This is rather loose, of course, but on the other hand passt will
sandbox itself into an empty filesystem, so we're not really adding
much to the attack surface except for what --fd is supposed to do.

Reported-by: Matej Hrica <mhrica@redhat.com>
Link: https://bugzilla.redhat.com/show_bug.cgi?id=2247221
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
---
Same with this one: I'm posting this to ease reviews, but I just
applied it as I don't actually expect reviews on SELinux rules. :)

 contrib/selinux/passt.te | 1 +
 1 file changed, 1 insertion(+)

diff --git a/contrib/selinux/passt.te b/contrib/selinux/passt.te
index ea768d9..401c9c3 100644
--- a/contrib/selinux/passt.te
+++ b/contrib/selinux/passt.te
@@ -124,3 +124,4 @@ allow passt_t self:icmp_socket { bind create setopt read write };
 allow passt_t user_tmp_t:dir { add_name write };
 allow passt_t user_tmp_t:file { create open };
 allow passt_t user_tmp_t:sock_file { create read write unlink };
+allow passt_t unconfined_t:unix_stream_socket { read write };
-- 
@@ -124,3 +124,4 @@ allow passt_t self:icmp_socket { bind create setopt read write };
 allow passt_t user_tmp_t:dir { add_name write };
 allow passt_t user_tmp_t:file { create open };
 allow passt_t user_tmp_t:sock_file { create read write unlink };
+allow passt_t unconfined_t:unix_stream_socket { read write };
-- 
2.39.2