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Description

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.

PUBLISHED Reserved 2023-10-13 | Published 2023-10-25 | Updated 2026-07-11 | Assigner redhat




HIGH: 7.0CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem types

Use After Free

Product status

Default status
affected

0:1.13.1-8.el9 (rpm) before *
unaffected

Default status
unaffected

Default status
unknown

Default status
unaffected

Default status
affected

Default status
unaffected

Default status
affected

Default status
unaffected

Default status
affected

Default status
unaffected

Timeline

2023-10-17:Reported to Red Hat.
2023-10-25:Made public.

References

access.redhat.com/errata/RHSA-2024:2298 (RHSA-2024:2298) vendor-advisory

access.redhat.com/security/cve/CVE-2023-5574 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2244735 (RHBZ#2244735) issue-tracking

lists.x.org/archives/xorg-announce/2023-October/003430.html

security.netapp.com/advisory/ntap-20231130-0004/

access.redhat.com/errata/RHSA-2024:2298 (RHSA-2024:2298) vendor-advisory

access.redhat.com/security/cve/CVE-2023-5574 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2244735 (RHBZ#2244735) issue-tracking

lists.x.org/archives/xorg-announce/2023-October/003430.html

cve.org (CVE-2023-5574)

nvd.nist.gov (CVE-2023-5574)

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