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Vulnerability record · CVE-2023-43786 · published 10 October 2023

CVE-2023-43786: X.org libx11 uncontrolled resource consumption vulnerability

XX.Org · Libx11

A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw allows a local user to consume all available system resources and cause a denial of service condition.

5.5 CVSS 3.1 Medium EPSS 0.46% · top 62.3% CWE-400 · Uncontrolled resource consumptionCWE-835 · CWE-835
5.5CVSS 3.1 base score
0.46%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw allows a local user to consume all available system resources and cause a denial of service condition.

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

Affected products

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

References

LinkTags
https://access.redhat.com/errata/RHSA-2024:2145
https://access.redhat.com/errata/RHSA-2024:2973
https://access.redhat.com/security/cve/CVE-2023-43786 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2242253 Issue TrackingThird Party Advisory
http://www.openwall.com/lists/oss-security/2024/01/24/9
https://access.redhat.com/errata/RHSA-2024:2145
https://access.redhat.com/errata/RHSA-2024:2973
https://access.redhat.com/security/cve/CVE-2023-43786 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2242253 Issue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00005.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/63IBRFLQVZSMOAZBZOBKFWJP2
https://security.netapp.com/advisory/ntap-20231103-0006/

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Source: NIST National Vulnerability Database (record CVE-2023-43786), CISA KEV, FIRST EPSS (scores of 2026-10-03). This page is refreshed as NVD updates the record.