Vulnerability Information
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
N/A
Vulnerability Description
Xen 4.1.x and 4.2.x, when the XSA-45 patch is in place, does not properly maintain references on pages stored for deferred cleanup, which allows local PV guest kernels to cause a denial of service (premature page free and hypervisor crash) or possibly gain privileges via unspecified vectors.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Xen Page Reference Counting 拒绝服务漏洞
Vulnerability Description
Xen是英国剑桥大学开发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 4.1.x以及4.2.x版本中存在安全漏洞。在安装了XSA-45补丁后，程序没有正确地保留延迟清理所用的页面引用。拥有本地PV访客内核权限的攻击者可利用该漏洞造成拒绝服务（过早的页面释放以及管理程序崩溃）。
CVSS Information
N/A
Vulnerability Type
N/A