CVE:CVE-2021-3972
CNNVD:CNNVD-202204-3729
Lenovo Notebook是中国联想（Lenovo）公司的联想的一款笔记本电脑。
Lenovo Notebook 存在安全漏洞，该漏洞源于使用错误驱动程序，并且错误地未停用。本地特权用户可以通过修改 NVRAM 变量来修改安全启动设置并绕过实施的安全限制。该漏洞允许本地用户提升系统的权限。
solution:Upgrade lenovo ideapad_3-14ada05_firmware to a higher version than e8cn33ww,and avoid the version (,e8cn33ww); Upgrade lenovo ideapad_3-14ada6_firmware to a higher version than hbcn21ww,and avoid the version (,hbcn21ww); Upgrade lenovo ideapad_3-14alc6_firmware to a higher version than glcn43ww,and avoid the version (,glcn43ww); Upgrade lenovo ideapad_3-14are05_firmware to a higher version than dzcn42ww,and avoid the version (,dzcn42ww); Upgrade lenovo ideapad_3-15ada6_firmware to a higher version than hbcn21ww,and avoid the version (,hbcn21ww); Upgrade lenovo ideapad_3-15alc6_firmware to a higher version than glcn43ww,and avoid the version (,glcn43ww); Upgrade lenovo ideapad_3-15are05_firmware to a higher version than dzcn42ww,and avoid the version (,dzcn42ww); Upgrade lenovo ideapad_3-15igl05_firmware to a higher version than dvcn23ww,and avoid the version (,dvcn23ww); Upgrade lenovo ideapad_3-17ada05_firmware to a higher version than e8cn33ww,and avoid the version (,e8cn33ww); 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