CVE-2023-5574

Summary

CVE-2023-5574 is a use-after-free vulnerability affecting xorg-x11-server-Xvfb. This issue specifically arises in Xvfb's Zaphod mode, which involves a multi-screen setup with multiple protocol screens. When the pointer is warped from screen 1 to screen 0, a use-after-free condition can occur during Xvfb shutdown or reset. Potentially, this flaw could be exploited for privilege escalation or denial-of-service attacks. Users employing the vulnerable configuration are advised to upgrade their Xvfb implementation promptly to mitigate this risk.

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