CVE:CVE-2021-3659
CNNVD:CNNVD-202108-911
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。攻击者可以通过net/mac802154/llsec.c强制取消引用 NULL 指针，以触发拒绝服务。
solution:Upgrade linux linux_kernel to a higher version than 5.12,and avoid the version (,5.12); Upgrade fedoraproject fedora to a higher version than 34,and avoid the version 34; Upgrade redhat enterprise_linux to a higher version than 7.0,8.0,and avoid the version 7.0,8.0; Upgrade redhat enterprise_linux_for_ibm_z_systems to a higher version than 8.0,and avoid the version 8.0; Upgrade redhat enterprise_linux_for_ibm_z_systems_eus to a higher version than 8.6,and avoid the version 8.6; Upgrade redhat enterprise_linux_for_power_little_endian_eus to a higher version than 8.6,and avoid the version 8.6; Upgrade redhat enterprise_linux_for_real_time to a higher version than 8.0,and avoid the version 8.0; Upgrade redhat enterprise_linux_for_real_time_for_nfv to a higher version than 8.0,and avoid the version 8.0; Upgrade redhat enterprise_linux_for_real_time_for_nfv_tus to a higher version than 8.6,and avoid the version 8.6; Upgrade redhat enterprise_linux_for_real_time_tus to a higher version than 8.6,and avoid the version 8.6; Upgrade redhat enterprise_linux_server_aus to a higher version than 8.6,and avoid the version 8.6; Upgrade redhat enterprise_linux_server_eus to a higher version than 8.6,and avoid the version 8.6; Upgrade redhat enterprise_linux_server_tus to a higher version than 8.6,and avoid the version 8.6; Upgrade redhat codeready_linux_builder to a higher version than -; Upgrade redhat virtualization_host to a higher version than 4.0,and avoid the version 4.0