CVE:CVE-2021-31829
CNNVD:CNNVD-202105-063
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，本地攻击者可利用该漏洞可以通过Linux内核的BPF读取内存片段，以获取敏感信息。
solution:Upgrade linux linux_kernel to a higher version than 5.12.1,and avoid the version (,5.12.1]; Upgrade fedoraproject fedora to a higher version than 32,33,34,and avoid the version 32,33,34; Upgrade debian debian_linux to a higher version than 9.0,and avoid the version 9.0