CVE:CVE-2021-3573
CNNVD:CNNVD-202106-478
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。
Linux kernel HCI subsystem存在资源管理错误漏洞，该漏洞源于HCI subsystem在用户断开蓝牙适配器或其他方式触发注销蓝牙设备事件时出现了一个漏洞。攻击者利用该漏洞使系统崩溃或升级他们在系统上的特权。
solution:Upgrade linux linux_kernel to a higher version than 5.13,5.13:rc1,5.13:rc2,5.13:rc3,5.13:rc4,and avoid the version (,5.13),5.13:rc1,5.13:rc2,5.13:rc3,5.13:rc4; Upgrade redhat enterprise_linux to a higher version than 6.0,7.0,8.0,and avoid the version 6.0,7.0,8.0; Upgrade fedoraproject fedora to a higher version than 34,and avoid the version 34