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CVE-2025-6021

Libxml2: integer overflow in xmlbuildqname() leads to stack buffer overflow in libxml2

Published: 6/12/2025 Last updated: 4/19/2026 Reserved: 6/12/2025

A flaw was found in libxml2's xmlBuildQName function, where integer overflows in buffer size calculations can lead to a stack-based buffer overflow. This issue can result in memory corruption or a denial of service when processing crafted input.

CNA assigner: redhat (53f830b8-0a3f-465b-8143-3b8a9948e749) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 7.5 High CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Opam packages affected (5)

bap-llvm conf-gtksourceview conf-gtksourceview3 conf-librsvg2 lablgtk3-gtkspell3

Products affected (60)

Product Vendor Version
Red Hat Discovery 2 Red Hat n/a
Red Hat Discovery 2 Red Hat n/a
Red Hat Insights proxy 1.5 Red Hat n/a
Red Hat Insights proxy 1.5 Red Hat n/a
Red Hat Enterprise Linux 8 Red Hat n/a
Red Hat Enterprise Linux 8.2 Advanced Update Support Red Hat n/a
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat n/a
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Red Hat n/a
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat n/a
Red Hat Enterprise Linux 8.6 Telecommunications Update Service Red Hat n/a
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Red Hat n/a
Red Hat Enterprise Linux 8.8 Telecommunications Update Service Red Hat n/a
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat n/a
Red Hat Enterprise Linux 9 Red Hat n/a
Red Hat Enterprise Linux 9 Red Hat n/a
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Red Hat n/a
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Red Hat n/a
Red Hat Enterprise Linux 9.4 Extended Update Support Red Hat n/a
Red Hat JBoss Core Services 2.4.62.SP2 Red Hat n/a
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Red Hat n/a
Red Hat Enterprise Linux 10 Red Hat n/a
Red Hat Enterprise Linux 7 Extended Lifecycle Support Red Hat n/a
Red Hat Enterprise Linux 8 Red Hat n/a
Red Hat Enterprise Linux 7 Extended Lifecycle Support Red Hat n/a
Red Hat Enterprise Linux 8 Red Hat n/a
Red Hat Enterprise Linux 8 Red Hat n/a
Red Hat Enterprise Linux 8.2 Advanced Update Support Red Hat n/a
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat MDM9206, MDM9607, MDM9635M, MDM9640, MDM9645, MSM8909W, SD 210/SD 212/SD 205, SD 400, SD 410/12, SD 615/16/SD 415, SD 617, SD 650/52, SD 808, SD 810
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Red Hat n/a
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat n/a
Red Hat Enterprise Linux 8.6 Telecommunications Update Service Red Hat n/a
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Red Hat n/a
Red Hat Enterprise Linux 8.8 Telecommunications Update Service Red Hat n/a
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat n/a
Red Hat Enterprise Linux 9 Red Hat n/a
n/a
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Red Hat n/a
Red Hat Enterprise Linux 9.4 Extended Update Support Red Hat n/a
Red Hat JBoss Core Services 2.4.62.SP2 Red Hat n/a
Red Hat Enterprise Linux 6 Red Hat n/a
Red Hat Enterprise Linux 6 Red Hat n/a
n/a
Red Hat Enterprise Linux 10 Red Hat n/a
Red Hat Hardened Images Red Hat n/a
Red Hat Hardened Images Red Hat n/a
Red Hat OpenShift Container Platform 4.18 Red Hat n/a
Red Hat OpenShift Container Platform 4.19 Red Hat n/a
Red Hat OpenShift Container Platform 4.15 Red Hat n/a
Red Hat OpenShift Container Platform 4.14 Red Hat n/a
Red Hat OpenShift Container Platform 4.13 Red Hat v.3.04
Red Hat OpenShift Container Platform 4.14 Red Hat n/a
Red Hat OpenShift Container Platform 4.15 Red Hat n/a
Red Hat OpenShift Container Platform 4.17 Red Hat n/a
Red Hat OpenShift Container Platform 4.18 Red Hat n/a
Red Hat OpenShift Container Platform 4.19 Red Hat n/a
Red Hat OpenShift Container Platform 4.13 Red Hat All Android releases from CAF using the Linux kernel
Red Hat OpenShift Container Platform 4.12 Red Hat n/a
Red Hat OpenShift Container Platform 4.16 Red Hat n/a
Red Hat OpenShift Container Platform 4.12 Red Hat n/a
Red Hat OpenShift Container Platform 4.17 Red Hat n/a

References (56)

Credits (2)