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.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
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EUVD |
EUVD-2023-57870 | 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. |
Fixes
Solution
No solution given by the vendor.
Workaround
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.
References
History
Fri, 22 Nov 2024 12:00:00 +0000
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Mon, 16 Sep 2024 17:45:00 +0000
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2025-07-30T12:41:23.179Z
Reserved: 2023-10-13T11:35:44.857Z
Link: CVE-2023-5574
No data.
Status : Modified
Published: 2023-10-25T20:15:18.717
Modified: 2024-11-21T08:42:02.790
Link: CVE-2023-5574
OpenCVE Enrichment
No data.
EUVD