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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: 6/30/2026 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 (57)

Product Vendor Version
Red Hat Discovery 2 Red Hat <= 1.12.0.27
Red Hat Discovery 2 Red Hat BIG-IP 15.0.0-15.1.0.2, 14.1.0-14.1.2.3, 13.1.0-13.1.3.2, 12.1.0-12.1.5.1, 11.5.2-11.6.5.1
Red Hat Insights proxy 1.5 Red Hat <= 1.12.0.27
Red Hat Insights proxy 1.5 Red Hat < 5.2
Red Hat Enterprise Linux 8 Red Hat <= 2.4
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Red Hat < 10.0.17763.2114
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat < 10.0.17763.2114
Red Hat Enterprise Linux 8.6 Telecommunications Update Service Red Hat < 10.0.17763.2114
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Red Hat < 10.0.18363.1734
Red Hat Enterprise Linux 8.8 Telecommunications Update Service Red Hat < 10.0.19043.1165
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat < 10.0.19041.1165
Red Hat Enterprise Linux 9 Red Hat < 10.0.19041.1165
Red Hat Enterprise Linux 9 Red Hat < 10.0.19042.1165
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Red Hat < 10.0.19042.1165
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Red Hat < 10.0.10240.19022
Red Hat Enterprise Linux 9.4 Extended Update Support Red Hat < 10.0.14393.4583
Red Hat JBoss Core Services 2.4.62.SP2 Red Hat < 10.0.14393.4583
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Red Hat < 6.0.16
Red Hat Enterprise Linux 10 Red Hat >= 1.1.0, < 1.3.0
Red Hat Enterprise Linux 7 Extended Lifecycle Support Red Hat 1.6.0.26
Red Hat Enterprise Linux 8 Red Hat n/a
Red Hat Enterprise Linux 6 Red Hat 11.2.0.4
11.1
Red Hat Enterprise Linux 10 Red Hat 11.5
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 < 10.15
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 Windows prior to 20.10.0, Linux prior to 21.01.0
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 WebAccess Node Version 8.4.4 and prior, WebAccess Node Version 9.0.0
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat < 68.5
Red Hat Enterprise Linux 9 Red Hat from 1.6.0 onwards
Red Hat Enterprise Linux 9 Red Hat FortiWeb 6.4.1, 6.4.0
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Red Hat < 5.2.36
11.1.2.4
Red Hat Enterprise Linux 9.4 Extended Update Support Red Hat Android-7.0 Android-7.1.1 Android-7.1.2 Android-8.0 Android-8.1 Android-9
Red Hat JBoss Core Services 2.4.62.SP2 Red Hat 10.9.66
Red Hat Enterprise Linux 6 Red Hat <= 1.12.0.27
Red Hat Hardened Images Red Hat BIG-IQ 7.0.0, 6.0.0-6.1.0, 5.2.0-5.4.0
Red Hat Hardened Images Red Hat <= 1.12.0.27
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 < 6.2.9200.23435
Red Hat OpenShift Container Platform 4.14 Red Hat < 6.2.9200.23435
Red Hat OpenShift Container Platform 4.17 Red Hat ETHC-22xx 1.12.14.5
Red Hat OpenShift Container Platform 4.18 Red Hat EWPC-22xx 1.12.13.2
Red Hat OpenShift Container Platform 4.19 Red Hat EWPC-22xx 1.12.14.5
Red Hat OpenShift Container Platform 4.13 Red Hat < 6.3.9600.20094
Red Hat OpenShift Container Platform 4.12 Red Hat < 10.0.14393.4583
Red Hat OpenShift Container Platform 4.12 Red Hat EBC-21xx 1.12.13.2
Red Hat OpenShift Container Platform 4.13 Red Hat EBC-21xx 1.12.14.5
Red Hat OpenShift Container Platform 4.14 Red Hat EFD-22xx 1.12.13.2
Red Hat OpenShift Container Platform 4.15 Red Hat EFD-22xx 1.12.14.5
Red Hat OpenShift Container Platform 4.16 Red Hat < 6.3.9600.20094
Red Hat OpenShift Container Platform 4.16 Red Hat ETHC-22xx 1.12.13.2
Red Hat OpenShift Container Platform 4.17 Red Hat < 6.3.9600.20094

References (58)

Credits (2)