安全公告/【CVE-2021-3975】

基本信息

漏洞名称:
受影响操作系统:Asianux
危险等级:中危
影响源码包:libvirt
CVSS评分:6.5
发现日期:2022-09-25
修复版本:6.2.0-20.01

漏洞描述

A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash.

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

补丁

参考

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3975
https://nvd.nist.gov/vuln/detail/CVE-2021-3975