Merge tag 'for-linus-fwctl' of git://git.kernel.org/pub/scm/linux/kernel/git/fwctl/fwctl

Pull fwctl fix from Jason Gunthorpe:

 - Buffer overflow due to missing input validation in pds

* tag 'for-linus-fwctl' of git://git.kernel.org/pub/scm/linux/kernel/git/fwctl/fwctl:
  fwctl: pds: Validate RPC input size before parsing

drivers/fwctl/pds/main.c

@@ -362,6 +362,9 @@ static void *pdsfc_fw_rpc(struct fwctl_uctx *uctx, enum fwctl_rpc_scope scope,
 	void *out = NULL;
 	int err;
 
+	if (in_len < sizeof(*rpc))
+		return ERR_PTR(-EINVAL);
+
 	err = pdsfc_validate_rpc(pdsfc, rpc, scope);
 	if (err)
 		return ERR_PTR(err);