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Commit 9ffc5412 authored by Steve French's avatar Steve French
Browse files

Check minimum response length on query_network_interface 



Acked-by: default avatarShirish Pargaonkar <shirishpargaonkar@gmail.com>
Signed-off-by: default avatarSteve French <smfrench@gmail.com>
parent b5b374ea

fs/cifs/smb2ops.c

+7 −4
Original line number Diff line number Diff line
@@ -265,15 +265,18 @@ SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon) 
			FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,

			NULL /* no data input */, 0 /* no data input */,

			(char **)&out_buf, &ret_data_len);



	if ((rc == 0)  && (ret_data_len > 0)) {

	if (rc != 0)

		cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);

	else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) {

		cifs_dbg(VFS, "server returned bad net interface info buf\n");

		rc = -EINVAL;

	} else {

		/* Dump info on first interface */

		cifs_dbg(FYI, "Adapter Capability 0x%x\t",

			le32_to_cpu(out_buf->Capability));

		cifs_dbg(FYI, "Link Speed %lld\n",

			le64_to_cpu(out_buf->LinkSpeed));

	} else

		cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);

	}



	return rc;

}