cvelist/2023/5xxx/CVE-2023-5574.json

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                "lang": "eng",
                "value": "A use-after-free flaw was found in xorg-x11-server-Xvfb. This issue occurs in Xvfb with a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode). If the pointer is warped from a screen 1 to a screen 0, a use-after-free issue may be triggered during shutdown or reset of the Xvfb server, allowing for possible escalation of privileges or denial of service."
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    "problemtype": {
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                        "value": "Use After Free",
                        "cweId": "CWE-416"
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    "references": {
        "reference_data": [
            {
                "url": "https://access.redhat.com/errata/RHSA-2024:2298",
                "refsource": "MISC",
                "name": "https://access.redhat.com/errata/RHSA-2024:2298"
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                "url": "https://access.redhat.com/security/cve/CVE-2023-5574",
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            {
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2244735",
                "refsource": "MISC",
                "name": "https://bugzilla.redhat.com/show_bug.cgi?id=2244735"
            },
            {
                "url": "https://lists.x.org/archives/xorg-announce/2023-October/003430.html",
                "refsource": "MISC",
                "name": "https://lists.x.org/archives/xorg-announce/2023-October/003430.html"
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    "work_around": [
        {
            "lang": "en",
            "value": "Starting Xvfb with the -noreset command line option limits the use-after-free from being triggered only at the Xvfb server shutdown. Also, do not start Xvfb as root."
        }
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