安全公告/【CVE-2021-4145】

基本信息

漏洞描述

A NULL pointer dereference issue was found in the block mirror layer of QEMU in versions prior to 6.2.0. The `self` pointer is dereferenced in mirror_wait_on_conflicts() without ensuring that it's not NULL. A malicious unprivileged user within the guest could use this flaw to crash the QEMU process on the host when writing data reaches the threshold of mirroring node.

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

修复方式

yum update PackageName

参考

https://access.redhat.com/security/cve/CVE-2021-4145 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4145 https://nvd.nist.gov/vuln/detail/CVE-2021-4145