安全公告/【CVE-2021-4197】

基本信息

漏洞描述

An unprivileged write to the file handler flaw in the Linux kernel's control groups and namespaces subsystem was found in the way users have access to some less privileged process that are controlled by cgroups and have higher privileged parent process. It is actually both for cgroup2 and cgroup1 versions of control groups. A local user could use this flaw to crash the system or escalate their privileges on the system.

修复方式

yum update PackageName

漏洞判定

执行命令yum info PackageName获取软件包版本号，版本小于修复版本，则受此漏洞影响，版本大于等于修复版本，则此漏洞已修复

参考

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4197
https://nvd.nist.gov/vuln/detail/CVE-2021-4197