CVE-2025-6170: Libxml2: stack buffer overflow in xmllint interactive shell command handling

Severity: low (CVSS 2.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-06-16 · updated 2026-10-30
Weakness: CWE-121

Description

A flaw was found in the interactive shell of the xmllint command-line tool, used for parsing XML files. When a user inputs an overly long command, the program does not check the input size properly, which can cause it to crash. This issue might allow attackers to run harmful code in rare configurations without modern protections.

Affected products

Red Hat Enterprise Linux: 6.0, 7.0, 8.0, 9.0, 10.0 (and their updates)
RedHat Jboss Core Services: all versions
Red Hat OpenShift Container Platform 4.18: 4.0 (and their updates)
xmlsoft libxml2: all versions
Red Hat Cert Manager support for Red Hat OpenShift release 1.17: all versions — fixed in 1791371080
Red Hat Cert Manager support for Red Hat OpenShift release 1.18: all versions — fixed in 1791459707
Red Hat Cert Manager support for Red Hat OpenShift release 1.20: all versions — fixed in 1790223279
Red Hat OpenShift Container Platform 4.18: all versions
Red Hat AI Inference Server 3.2: all versions — fixed in 1790621714
Red Hat AI Inference Server 3.5: all versions — fixed in 1791425869
Red Hat Discovery 2: all versions — fixed in 1784821670
Red Hat Enterprise Linux 10: all versions — fixed in 0:2.12.5-10.el10_2.2
Red Hat Enterprise Linux 10.0 Extended Update Support: all versions — fixed in 0:2.12.5-9.el10_0.2
Red Hat Enterprise Linux 8: all versions — fixed in 0:2.9.7-21.el8_10.6
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support: all versions — fixed in 0:2.9.7-13.el8_6.15
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On: all versions — fixed in 0:2.9.7-13.el8_6.15
Red Hat Enterprise Linux 8.8 Telecommunications Update Service: all versions — fixed in 0:2.9.7-16.el8_8.15
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions: all versions — fixed in 0:2.9.7-16.el8_8.15
Red Hat Enterprise Linux 9: all versions — fixed in 0:2.9.13-14.el9_8.2
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions: all versions — fixed in 0:2.9.13-3.el9_2.12
Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions: all versions — fixed in 0:2.9.13-13.el9_4.2
Red Hat Enterprise Linux 9.6 Extended Update Support: all versions — fixed in 0:2.9.13-12.el9_6.3
Red Hat Enterprise Linux AI 3.5: all versions — fixed in 1793206758
Red Hat Hardened Images: all versions — fixed in 2.15.2-0.3.hum1
Red Hat Insights proxy 1.5: all versions — fixed in 1786433656
Red Hat JBoss Core Services: all versions
Red Hat OpenShift AI 3.0: all versions — fixed in 1790276886
Red Hat OpenShift AI 3.2: all versions — fixed in 1790703497
Red Hat OpenShift AI 3.3: all versions — fixed in 1790703615
Red Hat OpenShift AI 3.4: all versions — fixed in 1790703542

How to fix

Upgrade to a fixed version: Red Hat Cert Manager support for Red Hat OpenShift release 1.17 1791371080; Red Hat Cert Manager support for Red Hat OpenShift release 1.18 1791459707; Red Hat Cert Manager support for Red Hat OpenShift release 1.20 1790223279; Red Hat AI Inference Server 3.2 1790621714; Red Hat AI Inference Server 3.5 1791425869; Red Hat Discovery 2 1784821670; Red Hat Enterprise Linux 10 0:2.12.5-10.el10_2.2; Red Hat Enterprise Linux 10.0 Extended Update Support 0:2.12.5-9.el10_0.2; Red Hat Enterprise Linux 8 0:2.9.7-21.el8_10.6; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:2.9.7-13.el8_6.15; Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:2.9.7-13.el8_6.15; Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:2.9.7-16.el8_8.15. Check the vendor advisory for mitigations.

References

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