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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
issues with partially successful P2M updates on x86 T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned. Guests are permitted to control certain P2M aspects of individual pages via hypercalls. These hypercalls may act on ranges of pages specified via page orders (resulting in a power-of-2 number of pages). In some cases the hypervisor carries out the requests by splitting them into smaller chunks. Error handling in certain PoD cases has been insufficient in that in particular partial success of some operations was not properly accounted for. There are two code paths affected - page removal (CVE-2021-28705) and insertion of new pages (CVE-2021-28709). (We provide one patch which combines the fix to both issues.)
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Xen 输入验证错误漏洞
Vulnerability Description
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 输入验证错误漏洞中存在输入验证错误漏洞，该漏洞源于在 x86 T 上部分成功的 P2M 更新问题[他的 CNA 信息记录与多个 CVE 相关；文本解释了哪些方面/漏洞对应于哪些 CVE。] x86 HVM 和 PVH 来宾可以在按需填充 (PoD) 模式下启动，以便为它们提供一种方法，以便以后轻松分配更多内存。访客可以通
CVSS Information
N/A
Vulnerability Type
N/A