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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
GNTTABOP_swap_grant_ref in Xen 4.2 through 4.5 does not check the grant table operation version, which allows local guest domains to cause a denial of service (NULL pointer dereference) via a hypercall without a GNTTABOP_setup_table or GNTTABOP_set_version.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Xen GNTTABOP_swap_grant_ref 安全漏洞
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 4.2版本至4.5版本的GNTTABOP_swap_grant_ref中存在安全漏洞，该漏洞源于程序没有检查授权表操作版本。本地虚拟机端攻击者可借助不带GNTTABOP_setup_table或GNTTABOP_set_version变量的超极调用利用该漏洞造成拒绝服务（空指针逆向引用）。
CVSS Information
N/A
Vulnerability Type
N/A