CVE:CVE-2021-30857
CNNVD:CNNVD-202108-1953
Apple tvOS是美国苹果（Apple）公司的一套智能电视操作系统。
Apple 多款产品存在竞争条件问题漏洞，该漏洞允许恶意应用程序使用内核特权执行任意代码。在以下产品和版本中被修复：tvOS 15, iOS 15 and iPadOS 15, watchOS 8, macOS Big Sur 11.6。
solution:Upgrade apple ipados to a higher version than 15.0,and avoid the version (,15.0); Upgrade apple iphone_os to a higher version than 15.0,and avoid the version (,15.0); Upgrade apple mac_os_x to a higher version than 10.15.7,10.15.7,10.15.7:security_update_2020-001,10.15.7:security_update_2021-001,10.15.7:security_update_2021-002,10.15.7:security_update_2021-003,10.15.7:security_update_2021-004,10.15.7:supplemental_update,and avoid the version (,10.15.7),10.15.7,10.15.7:security_update_2020-001,10.15.7:security_update_2021-001,10.15.7:security_update_2021-002,10.15.7:security_update_2021-003,10.15.7:security_update_2021-004,10.15.7:supplemental_update; Upgrade apple macos to a higher version than 11.6,and avoid the version [11.0,11.6); Upgrade apple tvos to a higher version than 15.0,and avoid the version (,15.0); Upgrade apple watchos to a higher version than 8.0,and avoid the version (,8.0)