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Vulnerability record · CVE-2024-0408 · published 18 January 2024

CVE-2024-0408: Tigervnc vulnerability

Tigervnc · Tigervnc

A flaw was found in the X.Org server. The GLX PBuffer code does not call the XACE hook when creating the buffer, leaving it unlabeled. When the client issues another request to access that resource (as with a GetGeometry) or when it creates another resource that needs to access that buffer, such as a GC, the XSELINUX code will try to use an object that was never labeled and crash because the SID is NULL.

5.5 CVSS 3.1 Medium EPSS 0.32% · top 77.3% CWE-158 · CWE-158
5.5CVSS 3.1 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
12Affected product versions listed by NVD
20References
17 Jun 2026Last modified by NVD

Description

A flaw was found in the X.Org server. The GLX PBuffer code does not call the XACE hook when creating the buffer, leaving it unlabeled. When the client issues another request to access that resource (as with a GetGeometry) or when it creates another resource that needs to access that buffer, such as a GC, the XSELINUX code will try to use an object that was never labeled and crash because the SID is NULL.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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-2024:0320 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-2024-0408 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2257689 Issue Tracking
https://access.redhat.com/errata/RHSA-2024:0320 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-2024-0408 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2257689 Issue Tracking
https://lists.debian.org/debian-lts-announce/2024/01/msg00016.html
https://lists.fedoraproject.org/archives/list/[email protected]/message/5J4H7CH565ALSZZYKOJFYDA5K
https://lists.fedoraproject.org/archives/list/[email protected]/message/EJBMCWQ54R6ZL3MYU2D2JBW6J
https://lists.fedoraproject.org/archives/list/[email protected]/message/IZ75X54CN4IFYMIV7OK3JVZ57
https://security.gentoo.org/glsa/202401-30
https://security.netapp.com/advisory/ntap-20240307-0006/

Track CVE-2024-0408 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

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Source: NIST National Vulnerability Database (record CVE-2024-0408), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.