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Vulnerability record · CVE-2023-5367 · published 25 October 2023

CVE-2023-5367: X.org x server out-of-bounds write vulnerability

XX.Org · X Server

A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible escalation of privileges or denial of service.

7.8 CVSS 3.1 High EPSS 0.62% · top 52.4% CWE-787 · Out-of-bounds write
7.8CVSS 3.1 base score
0.62%EPSS exploitation probability, 30 days
NoNot in CISA KEV
12Affected product versions listed by NVD
50References
23 Jun 2026Last modified by NVD

Description

A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible escalation of privileges or denial of service.

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

Affected products

12 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2023:6802 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:6808 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7373 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7388 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7405 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7428 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7436 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7526 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7533 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0010 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0128 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:2169
https://access.redhat.com/errata/RHSA-2024:2170
https://access.redhat.com/errata/RHSA-2024:2995
https://access.redhat.com/errata/RHSA-2024:2996
https://access.redhat.com/errata/RHSA-2025:12751
https://access.redhat.com/security/cve/CVE-2023-5367 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2243091 Issue TrackingThird Party Advisory
https://lists.x.org/archives/xorg-announce/2023-October/003430.html PatchVendor Advisory
https://access.redhat.com/errata/RHSA-2023:6802 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:6808 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7373 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7388 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7405 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7428 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7436 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7526 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7533 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0010 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0128 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:2169
https://access.redhat.com/errata/RHSA-2024:2170
https://access.redhat.com/errata/RHSA-2024:2995
https://access.redhat.com/errata/RHSA-2024:2996
https://access.redhat.com/security/cve/CVE-2023-5367 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2243091 Issue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00036.html
https://lists.fedoraproject.org/archives/list/[email protected]/message/2WS5E7H4A5J3U5YBCTMRPQVGW
https://lists.fedoraproject.org/archives/list/[email protected]/message/3RK66CXMXO3PCPDU3GDY5FK4U
https://lists.fedoraproject.org/archives/list/[email protected]/message/4YBK3I6SETHETBHDETFWM3VSZ

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Source: NIST National Vulnerability Database (record CVE-2023-5367), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.