CVE-2023-5574

Xorg-x11-server: use-after-free bug in damagedestroy

State: Published
Severity: 7.0 High
Published: Oct 25, 2023
Updated: Jul 11, 2026
Reserved: Oct 13, 2023

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.

Scores

CVSS	Score	Vector	Source
3.1	7.0 High	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H	redhat

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
Red Hat Enterprise Linux 9Red Hat	0:1.13.1-8.el9 and laterNot affected
Red Hat Enterprise Linux 6Red Hat
Red Hat Enterprise Linux 6Red Hat
Red Hat Enterprise Linux 7Red Hat
Red Hat Enterprise Linux 7Red Hat
Red Hat Enterprise Linux 8Red Hat
Red Hat Enterprise Linux 8Red Hat
Red Hat Enterprise Linux 8Red Hat
Red Hat Enterprise Linux 9Red Hat
Red Hat Enterprise Linux 9Red Hat

References

RHSA-2024:2298vendor-advisory
https://access.redhat.com/security/cve/CVE-2023-5574vdb-entry
RHBZ#2244735issue-tracking
https://lists.x.org/archives/xorg-announce/2023-October/003430.html
https://security.netapp.com/advisory/ntap-20231130-0004/

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