io_uring/af_unix: disable sending io_uring over sockets

[platform/kernel/linux-starfive.git] / net / core / scm.c

diff --git a/net/core/scm.c b/net/core/scm.c
index acb7d77..e762a4b 100644 (file)
--- a/net/core/scm.c
+++ b/net/core/scm.c
@@ -26,6 +26,7 @@
 #include <linux/nsproxy.h>
 #include <linux/slab.h>
 #include <linux/errqueue.h>
+#include <linux/io_uring.h>
 
 #include <linux/uaccess.h>
 
@@ -103,6 +104,11 @@ static int scm_fp_copy(struct cmsghdr *cmsg, struct scm_fp_list **fplp)
 
                if (fd < 0 || !(file = fget_raw(fd)))
                        return -EBADF;
+               /* don't allow io_uring files */
+               if (io_uring_get_socket(file)) {
+                       fput(file);
+                       return -EINVAL;
+               }
                *fpp++ = file;
                fpl->count++;
        }