Answer in brief
CVE-2026-44950 records a Unknown severity vulnerability in fs_read_glyphs() heap buffer overflow via cumulative glyph data overflow in libXfont2. The current sources do not mark it as known exploited. The current feed maps SUSE/Container suse/kiosk/tigervnc-x11vnc:1.14-63.8 (generic), SUSE/Container suse/kiosk/xorg:21.1-83.7 (generic), SUSE/Image SLES12-SP5-Azure-SAP-BYOS (generic), SUSE/Image SLES12-SP5-Azure-SAP-On-Demand (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps SUSE/Container suse/kiosk/tigervnc-x11vnc:1.14-63.8 (generic), SUSE/Container suse/kiosk/xorg:21.1-83.7 (generic), SUSE/Image SLES12-SP5-Azure-SAP-BYOS (generic), SUSE/Image SLES12-SP5-Azure-SAP-On-Demand (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| SUSE/Container suse/kiosk/tigervnc-x11vnc:1.14-63.8generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Container suse/kiosk/xorg:21.1-83.7generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES12-SP5-Azure-SAP-BYOSgeneric | >=? <2.0.3-3.6.1 | 2.0.3-3.6.1 |
| SUSE/Image SLES12-SP5-Azure-SAP-On-Demandgeneric | >=? <2.0.3-3.6.1 | 2.0.3-3.6.1 |
| SUSE/Image SLES12-SP5-EC2-SAP-BYOSgeneric | >=? <2.0.3-3.6.1 | 2.0.3-3.6.1 |
| SUSE/Image SLES12-SP5-EC2-SAP-On-Demandgeneric | >=? <2.0.3-3.6.1 | 2.0.3-3.6.1 |
| SUSE/Image SLES12-SP5-GCE-SAP-BYOSgeneric | >=? <2.0.3-3.6.1 | 2.0.3-3.6.1 |
| SUSE/Image SLES12-SP5-GCE-SAP-On-Demandgeneric | >=? <2.0.3-3.6.1 | 2.0.3-3.6.1 |
| SUSE/Image SLES15-SP6-SAPgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAP-Azuregeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAP-Azure-3Pgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAP-BYOSgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAP-BYOS-Azuregeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAP-BYOS-EC2generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAP-BYOS-GCEgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAPCALgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAPCAL-Azuregeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAPCAL-EC2generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAPCAL-GCEgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAP-EC2generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAP-GCEgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAP-Hardenedgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAP-Hardened-Azuregeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAP-Hardened-BYOSgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAP-Hardened-BYOS-Azuregeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAP-Hardened-BYOS-EC2generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAP-Hardened-BYOS-GCEgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAP-Hardened-EC2generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP6-SAP-Hardened-GCEgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP7-SAP-Azuregeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP7-SAP-Azure-3Pgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP7-SAP-BYOS-Azuregeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP7-SAP-BYOS-EC2generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP7-SAP-BYOS-GCEgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP7-SAPCAL-Azuregeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP7-SAPCAL-EC2generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP7-SAPCAL-GCEgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP7-SAP-EC2generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP7-SAP-GCEgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP7-SAP-GCE-3Pgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP7-SAP-Hardened-Azuregeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP7-SAP-Hardened-BYOS-Azuregeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP7-SAP-Hardened-BYOS-EC2generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP7-SAP-Hardened-BYOS-GCEgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES15-SP7-SAP-Hardened-GCEgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/Image SLES-SAP-Azuregeneric | >=? <2.0.7-160000.5.1 | 2.0.7-160000.5.1 |
| SUSE/Image SLES-SAP-Azure-3Pgeneric | >=? <2.0.7-160000.5.1 | 2.0.7-160000.5.1 |
| SUSE/Image SLES-SAP-BYOS-Azuregeneric | >=? <2.0.7-160000.5.1 | 2.0.7-160000.5.1 |
| SUSE/Image SLES-SAP-BYOS-EC2generic | >=? <2.0.7-160000.5.1 | 2.0.7-160000.5.1 |
| SUSE/Image SLES-SAP-BYOS-GCEgeneric | >=? <2.0.7-160000.5.1 | 2.0.7-160000.5.1 |
| SUSE/Image SLES-SAPCAL-GCEgeneric | >=? <2.0.7-160000.5.1 | 2.0.7-160000.5.1 |
| SUSE/Image SLES-SAP-GCEgeneric | >=? <2.0.7-160000.5.1 | 2.0.7-160000.5.1 |
| SUSE/Image SLES-SAP-GCE-3Pgeneric | >=? <2.0.7-160000.5.1 | 2.0.7-160000.5.1 |
| libXfont/libXfontgeneric | ? | Not reported |
| SUSE/openSUSE Leap 16.0generic | >=? <2.0.7-160000.5.1 | 2.0.7-160000.5.1 |
| SUSE/openSUSE Tumbleweedgeneric | >=? <2.0.7-3.1 | 2.0.7-3.1 |
| SUSE/SUSE Liberty Linux 10generic | >=? <2.0.6-5.el10_2.3 | 2.0.6-5.el10_2.3 |
| SUSE/SUSE Liberty Linux 8generic | >=? <2.0.3-2.el8_10.3 | 2.0.3-2.el8_10.3 |
| SUSE/SUSE Liberty Linux 9generic | >=? <2.0.3-12.el9_8.3 | 2.0.3-12.el9_8.3 |
| SUSE/SUSE Linux Enterprise Desktop 15 SP7generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOSgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/SUSE Linux Enterprise High Performance Computing 15 SP4-LTSSgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOSgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/SUSE Linux Enterprise High Performance Computing 15 SP5-LTSSgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/SUSE Linux Enterprise Module for Basesystem 15 SP7generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/SUSE Linux Enterprise Server 12 SP5-LTSSgeneric | >=? <2.0.3-3.6.1 | 2.0.3-3.6.1 |
| SUSE/SUSE Linux Enterprise Server 15 SP4-LTSSgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/SUSE Linux Enterprise Server 15 SP5-LTSSgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/SUSE Linux Enterprise Server 15 SP6-LTSSgeneric | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/SUSE Linux Enterprise Server 15 SP7generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/SUSE Linux Enterprise Server 16.0generic | >=? <2.0.7-160000.5.1 | 2.0.7-160000.5.1 |
| SUSE/SUSE Linux Enterprise Server for SAP Applications 15 SP4generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/SUSE Linux Enterprise Server for SAP Applications 15 SP5generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/SUSE Linux Enterprise Server for SAP Applications 15 SP6generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/SUSE Linux Enterprise Server for SAP Applications 15 SP7generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/SUSE Linux Enterprise Server for SAP applications 16.0generic | >=? <2.0.7-160000.5.1 | 2.0.7-160000.5.1 |
| SUSE/SUSE Linux Enterprise Server LTSS Extended Security 12 SP5generic | >=? <2.0.3-3.6.1 | 2.0.3-3.6.1 |
| SUSE/SUSE Manager Proxy LTS 4.3generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/SUSE Manager Retail Branch Server LTS 4.3generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
| SUSE/SUSE Manager Server LTS 4.3generic | >=? <2.0.3-150000.3.6.1 | 2.0.3-150000.3.6.1 |
Published upstream
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 10, 2026
fs_read_glyphs() in the libXfont2 font-server client (src/fc/fserve.c) copies each glyph's bitmap into a single buffer. Existing checks validates only that the source slice (position, length) lies within the source bitmap buffer. It does not check whether the running destination cursor has exceeded the allocation. A malicious font server can send overlapping source offsets -- for example 1000 glyphs each referencing {position:0, length:64} with nbytes=64. Each individual source range passes the existing validation, but the cumulative writes total 64000 bytes into a 64-byte destination buffer. This is a heap buffer overflow with attacker-controlled content.
Quoted source text, attributed separately from HOL analysis.