漏洞信息
尽管我们使用了先进的大模型技术,但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性,但请您根据实际情况进行核实和判断。
Vulnerability Title
domctl lock open to abuse
Vulnerability Description
[This CNA information record relates to multiple CVEs; the
text explains which aspects/vulnerabilities correspond to which CVE.]
To create and manage guests, domctl operations are used by the control
domain, a possible Xenstore domain, or by a domain controlling a
particular guest. Some of these operations may not be executed in
parallel, so a system-wide lock is used. The way that lock is acquired
is, however, not providing any fairness. This is CVE-2026-42489.
Furthermore, with XSM/Flask in use, the lock acquire will, for some
operations, occur ahead of any permission checking. This is
CVE-2026-42490.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Xen 竞争条件问题漏洞
Vulnerability Description
Xen是Xen组织开源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存在竞争条件问题漏洞,该漏洞源于系统范围锁的获取方式未提供公平性,且当XSM/Flask启用时,某些操作中锁获取会先于权限检查,可能导致权限低的攻击者通过网络访问造成拒绝服务。
CVSS Information
N/A
Vulnerability Type
N/A