CVE:CVE-2021-3444
CNNVD:CNNVD-202103-1340
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bpf校验器不能正确处理mod32目标寄存器截断。导致信息泄露。
solution:Upgrade linux linux_kernel to a higher version than 5.4.101,5.10.19,5.11.2,and avoid the version (,5.4.101),[5.5.0,5.10.19),[5.11,5.11.2); Upgrade debian debian_linux to a higher version than 9.0,and avoid the version 9.0; Upgrade canonical ubuntu_linux to a higher version than 14.04,16.04,18.04,20.04,and avoid the version 14.04,16.04,18.04,20.04