漏洞信息
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Vulnerability Title
Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in misyncdestroyfence()
Vulnerability Description
A use-after-free flaw was found in the X.Org X server and Xwayland in miSyncDestroyFence(). A client that sets up multiple fence triggers can trigger a use-after-free function pointer call. An attacker would connect to the X server to set up a fence and await that fence, then a second X connection destroys the fence, causing the use-after-free. This may be used to crash the server, or for privilege escalation if the X server runs as root.
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vulnerability Type
释放后使用
Vulnerability Title
X.Org X server和Xwayland 资源管理错误漏洞
Vulnerability Description
X.Org X Server是X.Org基金会的一款X Window系统显示服务器。Xwayland是Xwayland开源的一个通信协议,规定了显示服务器与其客户机之间的通信方式。 X.Org X server和Xwayland存在资源管理错误漏洞,该漏洞源于miSyncDestroyFence中存在释放后重用,可能导致服务器崩溃或权限提升。
CVSS Information
N/A
Vulnerability Type
N/A