CVE:CVE-2021-4093
CNNVD:CNNVD-202202-179
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 存在安全漏洞，该漏洞源于蓝牙子系统中存在释放后重用漏洞，攻击者可以可利用该漏洞造成拒绝服务。
solution:Upgrade linux linux_kernel to a higher version than 5.14.16,and avoid the version [5.11,5.14.16); Upgrade redhat enterprise_linux to a higher version than 8.0,and avoid the version 8.0; Upgrade fedoraproject fedora to a higher version than 35,and avoid the version 35; Upgrade canonical ubuntu_linux to a higher version than 20.04,21.10,and avoid the version 20.04,21.10