这是GPL协议的一部分吧。
参考这份GPL的 中文翻译

其中第15条 Disclaimer of Warranty 中：

THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
在适用法律许可下，本授权不对本程序承担任何担保责任。除非是书面申明，否则版权所有者和/或提供本程序的第三方组织，“照旧”不承担任何形式的担保责任，无论是承诺的还是暗含的，包括但不限于就适售性和为某个特殊目的的适用性的默认担保责任。有关本程序质量与效能的全部风险均由您承担。如本程序被证明有瑕疵，您应承担所有必要的服务、修复或更正的费用。

warranty 是担保的意思。

这里的warranty更多的应该是“授权”的意思

全文翻译过来，应该是“这是不需要任何授权的自由软件”

From http://translate.google.cn/?hl=zh-CN&tab=wT#en/zh-CN/warranty

 a written guarantee, issued to the purchaser of an article by its manufacturer, promising to repair or replace it if necessary within a specified period of time.

P.S. 现在墙内可以用的Google服务好像就翻译了吧