CVE:CVE-2022-27672
CNNVD:CNNVD-202302-1388
Xen是英国剑桥（Cambridge）大学的一款开源的虚拟机监视器产品。该产品能够使不同和不兼容的操作系统运行在同一台计算机上，并支持在运行时进行迁移，保证正常运行并且避免宕机。
Xen 4.17之前版本存在安全漏洞，该漏洞源于在某些 AMD CPU 上，RAS在非空闲线程之间动态分区，这允许攻击者控制相邻线程上的推测执行，攻击者利用该漏洞能够推断出任意主机的内存，包括分配给其他客人的内存。
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