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

7.5 CVSS

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Red Hat would like to thank Ahmed Lekssays for reporting this issue.

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Affected Vendor

Unknown

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Affected Software

Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Telecommunications Update Service, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.8 Telecommunications Update Service, Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.4 Extended Update Support, Red Hat JBoss Core Services 2.4.62.SP2, Red Hat OpenShift Container Platform 4.12, Red Hat OpenShift Container Platform 4.13, Red Hat OpenShift Container Platform 4.14, Red Hat OpenShift Container Platform 4.15, Red Hat OpenShift Container Platform 4.16, Red Hat OpenShift Container Platform 4.17, Red Hat OpenShift Container Platform 4.18, Red Hat OpenShift Container Platform 4.19, Red Hat Discovery 2, Red Hat Hardened Images, Red Hat Insights proxy 1.5, Red Hat Enterprise Linux 6

Vulnerable Versions:

0, 0:2.12.5-7.el10_0, 0:2.9.1-6.el7_9.10, 0:2.9.7-21.el8_10.1, 0:2.9.7-9.el8_2.3, 0:2.9.7-9.el8_4.6, 0:2.9.7-13.el8_6.10, 0:2.9.7-16.el8_8.9, 0:2.9.13-10.el9_6, 0:2.9.13-1.el9_0.5, 0:2.9.13-3.el9_2.7, 0:2.9.13-10.el9_4, 412.86.202509030110-0, 413.92.202509030117-0, 414.92.202508041909-0, 415.92.202508192014-0, 416.94.202508050040-0, 417.94.202508141510-0, 418.94.202508060022-0, 4.19.9.6.202507230107-0, 2.0.1-1754478727, 2.15.2-0.3.hum1, 1.5.5-1754504343