Upstream information

CVE-2026-55999 at MITRE

Description

Local attackers with a X connection able to provide PCX fonts to the X
server xorg-server before 21.2.24 and xwayland before 24.1.13 could
cause a heap buffer overflow via SetFont due to missing glyph boundary checks.

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail CNA (SUSE) SUSE
Base Score 8.5 7
Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network Local
Attack Complexity High High
Privileges Required Low Low
User Interaction None None
Scope Changed Unchanged
Confidentiality Impact High High
Integrity Impact High High
Availability Impact High High
CVSSv3 Version 3.1 3.1
CVSS v4 Scores
CVSS detail SUSE
Base Score 7.3
Vector CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Attack Vector Local
Attack Complexity Low
Attack Requirements Present
Privileges Required Low
User Interaction None
Vulnerable System Confidentiality Impact High
Vulnerable System Integrity Impact High
Vulnerable System Availability Impact High
Subsequent System Confidentiality Impact None
Subsequent System Integrity Impact None
Subsequent System Availability Impact None
CVSSv4 Version 4.0
SUSE Bugzilla entry: 1268893 [NEW]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Desktop 15 SP7
SUSE Linux Enterprise Server 15 SP7
SUSE Linux Enterprise Server for SAP Applications 15 SP7
  • xorg-x11-server >= 21.1.15-150700.5.22.1
  • xorg-x11-server-Xvfb >= 21.1.15-150700.5.22.1
  • xorg-x11-server-extra >= 21.1.15-150700.5.22.1
  • xorg-x11-server-sdk >= 21.1.15-150700.5.22.1
  • xwayland >= 24.1.5-150700.3.22.1
 Patchnames:
SUSE-SLE-Module-Basesystem-15-SP7-2026-2788
SUSE-SLE-Module-Development-Tools-15-SP7-2026-2788
SUSE-SLE-Product-WE-15-SP7-2026-2787
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS
  • xorg-x11-server >= 1.20.3-150400.38.74.1
  • xorg-x11-server-extra >= 1.20.3-150400.38.74.1
  • xorg-x11-server-sdk >= 1.20.3-150400.38.74.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-2789
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • xorg-x11-server >= 1.20.3-150400.38.74.1
  • xorg-x11-server-extra >= 1.20.3-150400.38.74.1
  • xorg-x11-server-sdk >= 1.20.3-150400.38.74.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-2789
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS
  • xorg-x11-server >= 21.1.4-150500.7.52.1
  • xorg-x11-server-Xvfb >= 21.1.4-150500.7.52.1
  • xorg-x11-server-extra >= 21.1.4-150500.7.52.1
  • xorg-x11-server-sdk >= 21.1.4-150500.7.52.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-2791
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
  • xorg-x11-server >= 21.1.4-150500.7.52.1
  • xorg-x11-server-Xvfb >= 21.1.4-150500.7.52.1
  • xorg-x11-server-extra >= 21.1.4-150500.7.52.1
  • xorg-x11-server-sdk >= 21.1.4-150500.7.52.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-2791
SUSE Linux Enterprise High Performance Computing 15 SP7
  • xorg-x11-server >= 21.1.15-150700.5.22.1
  • xorg-x11-server-Xvfb >= 21.1.15-150700.5.22.1
  • xorg-x11-server-extra >= 21.1.15-150700.5.22.1
  • xorg-x11-server-sdk >= 21.1.15-150700.5.22.1
 Patchnames:
SUSE-SLE-Module-Basesystem-15-SP7-2026-2788
SUSE-SLE-Module-Development-Tools-15-SP7-2026-2788
SUSE Linux Enterprise Module for Basesystem 15 SP7
  • xorg-x11-server >= 21.1.15-150700.5.22.1
  • xorg-x11-server-Xvfb >= 21.1.15-150700.5.22.1
  • xorg-x11-server-extra >= 21.1.15-150700.5.22.1
 Patchnames:
SUSE-SLE-Module-Basesystem-15-SP7-2026-2788
SUSE Linux Enterprise Module for Development Tools 15 SP7
  • xorg-x11-server-sdk >= 21.1.15-150700.5.22.1
 Patchnames:
SUSE-SLE-Module-Development-Tools-15-SP7-2026-2788
SUSE Linux Enterprise Server 12 SP5-LTSS
  • xorg-x11-server >= 1.19.6-10.105.1
  • xorg-x11-server-extra >= 1.19.6-10.105.1
 Patchnames:
SUSE-SLE-SERVER-12-SP5-LTSS-2026-2792
SUSE Linux Enterprise Server 15 SP4-LTSS
  • xorg-x11-server >= 1.20.3-150400.38.74.1
  • xorg-x11-server-extra >= 1.20.3-150400.38.74.1
  • xorg-x11-server-sdk >= 1.20.3-150400.38.74.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-2789
SUSE Linux Enterprise Server 15 SP5-LTSS
  • xorg-x11-server >= 21.1.4-150500.7.52.1
  • xorg-x11-server-Xvfb >= 21.1.4-150500.7.52.1
  • xorg-x11-server-extra >= 21.1.4-150500.7.52.1
  • xorg-x11-server-sdk >= 21.1.4-150500.7.52.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-2791
SUSE Linux Enterprise Server 15 SP6-LTSS
  • xorg-x11-server >= 21.1.11-150600.5.31.1
  • xorg-x11-server-Xvfb >= 21.1.11-150600.5.31.1
  • xorg-x11-server-extra >= 21.1.11-150600.5.31.1
  • xorg-x11-server-sdk >= 21.1.11-150600.5.31.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-2786
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5
  • xorg-x11-server >= 1.19.6-10.105.1
  • xorg-x11-server-extra >= 1.19.6-10.105.1
 Patchnames:
SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-2792
SUSE Linux Enterprise Server for SAP Applications 15 SP4
  • xorg-x11-server >= 1.20.3-150400.38.74.1
  • xorg-x11-server-extra >= 1.20.3-150400.38.74.1
  • xorg-x11-server-sdk >= 1.20.3-150400.38.74.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP4-2026-2789
SUSE Linux Enterprise Server for SAP Applications 15 SP5
  • xorg-x11-server >= 21.1.4-150500.7.52.1
  • xorg-x11-server-Xvfb >= 21.1.4-150500.7.52.1
  • xorg-x11-server-extra >= 21.1.4-150500.7.52.1
  • xorg-x11-server-sdk >= 21.1.4-150500.7.52.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP5-2026-2791
SUSE Linux Enterprise Server for SAP Applications 15 SP6
  • xorg-x11-server >= 21.1.11-150600.5.31.1
  • xorg-x11-server-Xvfb >= 21.1.11-150600.5.31.1
  • xorg-x11-server-extra >= 21.1.11-150600.5.31.1
  • xorg-x11-server-sdk >= 21.1.11-150600.5.31.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP6-2026-2786
SUSE Linux Enterprise Workstation Extension 15 SP7
  • xwayland >= 24.1.5-150700.3.22.1
 Patchnames:
SUSE-SLE-Product-WE-15-SP7-2026-2787
SUSE Manager Proxy LTS 4.3
  • xorg-x11-server >= 1.20.3-150400.38.74.1
  • xorg-x11-server-extra >= 1.20.3-150400.38.74.1
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Proxy-4.3-LTS-2026-2789
SUSE Manager Retail Branch Server LTS 4.3
  • xorg-x11-server >= 1.20.3-150400.38.74.1
  • xorg-x11-server-extra >= 1.20.3-150400.38.74.1
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.3-LTS-2026-2789
SUSE Manager Server LTS 4.3
  • xorg-x11-server >= 1.20.3-150400.38.74.1
  • xorg-x11-server-extra >= 1.20.3-150400.38.74.1
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Server-4.3-LTS-2026-2789

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP7 xorg-x11-server Released
SUSE Linux Enterprise Desktop 15 SP7 xwayland Released
SUSE Linux Enterprise High Performance Computing 15 SP7 xorg-x11-server Released
SUSE Linux Enterprise Module for Basesystem 15 SP7 xorg-x11-server Released
SUSE Linux Enterprise Module for Development Tools 15 SP7 xorg-x11-server Released
SUSE Linux Enterprise Server 15 SP7 xorg-x11-server Released
SUSE Linux Enterprise Server 15 SP7 xwayland Released
SUSE Linux Enterprise Server 16.0 xwayland In progress
SUSE Linux Enterprise Server 16.1 xwayland Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 xorg-x11-server Released
SUSE Linux Enterprise Server for SAP Applications 15 SP7 xwayland Released
SUSE Linux Enterprise Server for SAP applications 16.0 xwayland In progress
SUSE Linux Enterprise Server for SAP applications 16.1 xwayland Affected
SUSE Linux Enterprise Workstation Extension 15 SP7 xwayland Released
openSUSE Leap 16.0 xwayland Affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP4 xorg-x11-server Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS xorg-x11-server Released
SUSE Linux Enterprise High Performance Computing 15 SP5 xorg-x11-server Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS xorg-x11-server Released
SUSE Linux Enterprise Module for Basesystem 15 SP4 xorg-x11-server Affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 xorg-x11-server Affected
SUSE Linux Enterprise Module for Basesystem 15 SP6 xorg-x11-server Affected
SUSE Linux Enterprise Module for Development Tools 15 SP4 xorg-x11-server Affected
SUSE Linux Enterprise Module for Development Tools 15 SP5 xorg-x11-server Affected
SUSE Linux Enterprise Module for Development Tools 15 SP6 xorg-x11-server Affected
SUSE Linux Enterprise Server 12 SP5 xorg-x11-server Affected
SUSE Linux Enterprise Server 12 SP5-LTSS xorg-x11-server Released
SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security xorg-x11-server Released
SUSE Linux Enterprise Server 15 SP4 xorg-x11-server Affected
SUSE Linux Enterprise Server 15 SP4-LTSS xorg-x11-server Released
SUSE Linux Enterprise Server 15 SP5 xorg-x11-server Affected
SUSE Linux Enterprise Server 15 SP5-LTSS xorg-x11-server Released
SUSE Linux Enterprise Server 15 SP6 xorg-x11-server Affected
SUSE Linux Enterprise Server 15 SP6-LTSS xorg-x11-server Released
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 xorg-x11-server Released
SUSE Linux Enterprise Server for SAP Applications 12 SP5 xorg-x11-server Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6 xorg-x11-server Released
SUSE Manager Proxy 4.3 xorg-x11-server Affected
SUSE Manager Proxy LTS 4.3 xorg-x11-server Released
SUSE Manager Retail Branch Server 4.3 xorg-x11-server Affected
SUSE Manager Retail Branch Server LTS 4.3 xorg-x11-server Released
SUSE Manager Server 4.3 xorg-x11-server Affected
SUSE Manager Server LTS 4.3 xorg-x11-server Released
Products past their end of life and not receiving proactive updates anymore.
HPE Helion OpenStack 8 xorg-x11-server Affected
SUSE CaaS Platform 4.0 xorg-x11-server Affected
SUSE Enterprise Storage 6 xorg-x11-server Affected
SUSE Enterprise Storage 7 xorg-x11-server Affected
SUSE Enterprise Storage 7.1 xorg-x11-server Affected
SUSE Linux Enterprise Desktop 12 SP2 xorg-x11-server Affected
SUSE Linux Enterprise Desktop 12 SP3 xorg-x11-server Affected
SUSE Linux Enterprise Desktop 12 SP4 xorg-x11-server Unsupported
SUSE Linux Enterprise Desktop 15 SP1 xorg-x11-server Affected
SUSE Linux Enterprise Desktop 15 SP2 xorg-x11-server Affected
SUSE Linux Enterprise Desktop 15 SP3 xorg-x11-server Affected
SUSE Linux Enterprise Desktop 15 SP4 xorg-x11-server Affected
SUSE Linux Enterprise Desktop 15 SP5 xorg-x11-server Affected
SUSE Linux Enterprise Desktop 15 SP6 xorg-x11-server Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 xorg-x11-server Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS xorg-x11-server Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS xorg-x11-server Affected
SUSE Linux Enterprise High Performance Computing 15 SP2 xorg-x11-server Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS xorg-x11-server Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS xorg-x11-server Affected
SUSE Linux Enterprise High Performance Computing 15 SP3 xorg-x11-server Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS xorg-x11-server Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS xorg-x11-server Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS xorg-x11-server Released
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS xorg-x11-server Released
SUSE Linux Enterprise High Performance Computing 15 SP6 xorg-x11-server Affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 xorg-x11-server Affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 xorg-x11-server Affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 xorg-x11-server Affected
SUSE Linux Enterprise Module for Development Tools 15 SP1 xorg-x11-server Affected
SUSE Linux Enterprise Module for Development Tools 15 SP2 xorg-x11-server Affected
SUSE Linux Enterprise Module for Development Tools 15 SP3 xorg-x11-server Affected
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT xorg-x11-server Affected
SUSE Linux Enterprise Real Time 15 SP2 xorg-x11-server Affected
SUSE Linux Enterprise Real Time 15 SP3 xorg-x11-server Affected
SUSE Linux Enterprise Real Time 15 SP4 xorg-x11-server Affected
SUSE Linux Enterprise Server 12 SP2 xorg-x11-server Affected
SUSE Linux Enterprise Server 12 SP2-BCL xorg-x11-server Affected
SUSE Linux Enterprise Server 12 SP2-ESPOS xorg-x11-server Affected
SUSE Linux Enterprise Server 12 SP2-LTSS xorg-x11-server Affected
SUSE Linux Enterprise Server 12 SP3 xorg-x11-server Affected
SUSE Linux Enterprise Server 12 SP3-BCL xorg-x11-server Affected
SUSE Linux Enterprise Server 12 SP3-ESPOS xorg-x11-server Affected
SUSE Linux Enterprise Server 12 SP3-LTSS xorg-x11-server Affected
SUSE Linux Enterprise Server 12 SP4 xorg-x11-server Unsupported
SUSE Linux Enterprise Server 12 SP4-ESPOS xorg-x11-server Unsupported
SUSE Linux Enterprise Server 12 SP4-LTSS xorg-x11-server Unsupported
SUSE Linux Enterprise Server 15 SP1 xorg-x11-server Affected
SUSE Linux Enterprise Server 15 SP1-BCL xorg-x11-server Affected
SUSE Linux Enterprise Server 15 SP1-LTSS xorg-x11-server Affected
SUSE Linux Enterprise Server 15 SP2 xorg-x11-server Affected
SUSE Linux Enterprise Server 15 SP2-BCL xorg-x11-server Affected
SUSE Linux Enterprise Server 15 SP2-LTSS xorg-x11-server Affected
SUSE Linux Enterprise Server 15 SP3 xorg-x11-server Affected
SUSE Linux Enterprise Server 15 SP3-BCL xorg-x11-server Affected
SUSE Linux Enterprise Server 15 SP3-LTSS xorg-x11-server Affected
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 xorg-x11-server Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP2 xorg-x11-server Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 xorg-x11-server Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 xorg-x11-server Unsupported
SUSE Linux Enterprise Server for SAP Applications 15 SP1 xorg-x11-server Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 xorg-x11-server Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 xorg-x11-server Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 xorg-x11-server Released
SUSE Linux Enterprise Server for SAP Applications 15 SP5 xorg-x11-server Released
SUSE Linux Enterprise Software Development Kit 12 SP2 xorg-x11-server Affected
SUSE Linux Enterprise Software Development Kit 12 SP3 xorg-x11-server Affected
SUSE Linux Enterprise Software Development Kit 12 SP4 xorg-x11-server Unsupported
SUSE Linux Enterprise Software Development Kit 12 SP5 xorg-x11-server Affected
SUSE Linux Enterprise Workstation Extension 15 SP1 xorg-x11-server Affected
SUSE Linux Enterprise Workstation Extension 15 SP2 xorg-x11-server Affected
SUSE Linux Enterprise Workstation Extension 15 SP3 xorg-x11-server Affected
SUSE Linux Enterprise Workstation Extension 15 SP4 xorg-x11-server Affected
SUSE Linux Enterprise Workstation Extension 15 SP5 xorg-x11-server Affected
SUSE Linux Enterprise Workstation Extension 15 SP6 xorg-x11-server Affected
SUSE Manager Proxy 4.0 xorg-x11-server Affected
SUSE Manager Proxy 4.1 xorg-x11-server Affected
SUSE Manager Proxy 4.2 xorg-x11-server Affected
SUSE Manager Retail Branch Server 4.0 xorg-x11-server Affected
SUSE Manager Retail Branch Server 4.1 xorg-x11-server Affected
SUSE Manager Retail Branch Server 4.2 xorg-x11-server Affected
SUSE Manager Server 4.0 xorg-x11-server Affected
SUSE Manager Server 4.1 xorg-x11-server Affected
SUSE Manager Server 4.2 xorg-x11-server Affected
SUSE OpenStack Cloud 7 xorg-x11-server Affected
SUSE OpenStack Cloud 8 xorg-x11-server Affected
SUSE OpenStack Cloud 9 xorg-x11-server Unsupported
SUSE OpenStack Cloud Crowbar 8 xorg-x11-server Affected
SUSE OpenStack Cloud Crowbar 9 xorg-x11-server Unsupported
openSUSE Leap 15.3 xorg-x11-server Affected
openSUSE Leap 15.4 xorg-x11-server Released
openSUSE Leap 15.5 xorg-x11-server Released
openSUSE Leap 15.6 xorg-x11-server Released
Container Status
suse/kiosk/xorg
suse/kiosk/xorg:21		 xorg-x11-serverIn progress

SUSE Timeline for this CVE

CVE page created: Wed Jul 8 12:02:44 2026
CVE page last modified: Wed Jul 8 13:32:31 2026