Libxml2: integer overflow in xmlbuildqname() leads to stack buffer overflow in libxml2
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.
CVE-2025-6021
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2025-6021
Red Hat Enterprise Linux 10
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 7 Extended Lifecycle Support
Source reference: /containers/cna/affected/2/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 8
Source reference: /containers/cna/affected/3/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 8
Source reference: /containers/cna/affected/4/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 8.2 Advanced Update Support
Source reference: /containers/cna/affected/5/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Source reference: /containers/cna/affected/6/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
Source reference: /containers/cna/affected/7/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Source reference: /containers/cna/affected/8/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 8.6 Telecommunications Update Service
Source reference: /containers/cna/affected/9/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
Source reference: /containers/cna/affected/10/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Source reference: /containers/cna/affected/11/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Source reference: /containers/cna/affected/12/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 9
Source reference: /containers/cna/affected/13/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 9
Source reference: /containers/cna/affected/14/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
Source reference: /containers/cna/affected/15/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Source reference: /containers/cna/affected/16/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 9.4 Extended Update Support
Source reference: /containers/cna/affected/17/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat JBoss Core Services 2.4.62.SP2
Source reference: /containers/cna/affected/18/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.12
Source reference: /containers/cna/affected/19/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.13
Source reference: /containers/cna/affected/20/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.14
Source reference: /containers/cna/affected/21/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.15
Source reference: /containers/cna/affected/22/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.16
Source reference: /containers/cna/affected/23/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.17
Source reference: /containers/cna/affected/24/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.18
Source reference: /containers/cna/affected/25/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.19
Source reference: /containers/cna/affected/26/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Discovery 2
Source reference: /containers/cna/affected/27/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Hardened Images
Source reference: /containers/cna/affected/28/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Insights proxy 1.5
Source reference: /containers/cna/affected/29/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 6
Source reference: /containers/cna/affected/30/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "2.14.4",
"versionType": "semver"
}
],
"packageName": "libxml2",
"collectionURL": "https://gitlab.gnome.org/GNOME/libxml2/",
"defaultStatus": "unaffected"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:10.0"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 10",
"versions": [
{
"status": "unaffected",
"version": "0:2.12.5-7.el10_0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/o:redhat:rhel_els:7"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
"versions": [
{
"status": "unaffected",
"version": "0:2.9.1-6.el7_9.10",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:enterprise_linux:8::appstream",
"cpe:/o:redhat:enterprise_linux:8::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8",
"versions": [
{
"status": "unaffected",
"version": "0:2.9.7-21.el8_10.1",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:enterprise_linux:8::appstream",
"cpe:/o:redhat:enterprise_linux:8::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8",
"versions": [
{
"status": "unaffected",
"version": "0:2.9.7-21.el8_10.1",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhel_aus:8.2::appstream",
"cpe:/o:redhat:rhel_aus:8.2::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8.2 Advanced Update Support",
"versions": [
{
"status": "unaffected",
"version": "0:2.9.7-9.el8_2.3",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhel_aus:8.4::appstream",
"cpe:/a:redhat:rhel_eus_long_life:8.4::appstream",
"cpe:/o:redhat:rhel_aus:8.4::baseos",
"cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
"versions": [
{
"status": "unaffected",
"version": "0:2.9.7-9.el8_4.6",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhel_aus:8.4::appstream",
"cpe:/a:redhat:rhel_eus_long_life:8.4::appstream",
"cpe:/o:redhat:rhel_aus:8.4::baseos",
"cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
"versions": [
{
"status": "unaffected",
"version": "0:2.9.7-9.el8_4.6",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhel_aus:8.6::appstream",
"cpe:/a:redhat:rhel_e4s:8.6::appstream",
"cpe:/a:redhat:rhel_tus:8.6::appstream",
"cpe:/o:redhat:rhel_aus:8.6::baseos",
"cpe:/o:redhat:rhel_e4s:8.6::baseos",
"cpe:/o:redhat:rhel_tus:8.6::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
"versions": [
{
"status": "unaffected",
"version": "0:2.9.7-13.el8_6.10",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhel_aus:8.6::appstream",
"cpe:/a:redhat:rhel_e4s:8.6::appstream",
"cpe:/a:redhat:rhel_tus:8.6::appstream",
"cpe:/o:redhat:rhel_aus:8.6::baseos",
"cpe:/o:redhat:rhel_e4s:8.6::baseos",
"cpe:/o:redhat:rhel_tus:8.6::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service",
"versions": [
{
"status": "unaffected",
"version": "0:2.9.7-13.el8_6.10",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhel_aus:8.6::appstream",
"cpe:/a:redhat:rhel_e4s:8.6::appstream",
"cpe:/a:redhat:rhel_tus:8.6::appstream",
"cpe:/o:redhat:rhel_aus:8.6::baseos",
"cpe:/o:redhat:rhel_e4s:8.6::baseos",
"cpe:/o:redhat:rhel_tus:8.6::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions",
"versions": [
{
"status": "unaffected",
"version": "0:2.9.7-13.el8_6.10",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhel_e4s:8.8::appstream",
"cpe:/a:redhat:rhel_tus:8.8::appstream",
"cpe:/o:redhat:rhel_e4s:8.8::baseos",
"cpe:/o:redhat:rhel_tus:8.8::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
"versions": [
{
"status": "unaffected",
"version": "0:2.9.7-16.el8_8.9",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhel_e4s:8.8::appstream",
"cpe:/a:redhat:rhel_tus:8.8::appstream",
"cpe:/o:redhat:rhel_e4s:8.8::baseos",
"cpe:/o:redhat:rhel_tus:8.8::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
"versions": [
{
"status": "unaffected",
"version": "0:2.9.7-16.el8_8.9",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:enterprise_linux:9::appstream",
"cpe:/o:redhat:enterprise_linux:9::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9",
"versions": [
{
"status": "unaffected",
"version": "0:2.9.13-10.el9_6",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:enterprise_linux:9::appstream",
"cpe:/o:redhat:enterprise_linux:9::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9",
"versions": [
{
"status": "unaffected",
"version": "0:2.9.13-10.el9_6",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhel_e4s:9.0::appstream",
"cpe:/o:redhat:rhel_e4s:9.0::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions",
"versions": [
{
"status": "unaffected",
"version": "0:2.9.13-1.el9_0.5",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhel_e4s:9.2::appstream",
"cpe:/o:redhat:rhel_e4s:9.2::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
"versions": [
{
"status": "unaffected",
"version": "0:2.9.13-3.el9_2.7",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhel_eus:9.4::appstream",
"cpe:/o:redhat:rhel_eus:9.4::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9.4 Extended Update Support",
"versions": [
{
"status": "unaffected",
"version": "0:2.9.13-10.el9_4",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:jboss_core_services:1.0"
],
"vendor": "Red Hat",
"product": "Red Hat JBoss Core Services 2.4.62.SP2",
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unaffected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.12::el8"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.12",
"versions": [
{
"status": "unaffected",
"version": "412.86.202509030110-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-8",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.13::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.13",
"versions": [
{
"status": "unaffected",
"version": "413.92.202509030117-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.14::el8",
"cpe:/a:redhat:openshift:4.14::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.14",
"versions": [
{
"status": "unaffected",
"version": "414.92.202508041909-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.15::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.15",
"versions": [
{
"status": "unaffected",
"version": "415.92.202508192014-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.16::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.16",
"versions": [
{
"status": "unaffected",
"version": "416.94.202508050040-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.17::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.17",
"versions": [
{
"status": "unaffected",
"version": "417.94.202508141510-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.18::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.18",
"versions": [
{
"status": "unaffected",
"version": "418.94.202508060022-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.19::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.19",
"versions": [
{
"status": "unaffected",
"version": "4.19.9.6.202507230107-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:discovery:2::el9"
],
"vendor": "Red Hat",
"product": "Red Hat Discovery 2",
"versions": [
{
"status": "unaffected",
"version": "2.0.1-1754478727",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "discovery/discovery-server-rhel9",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:hummingbird:1"
],
"vendor": "Red Hat",
"product": "Red Hat Hardened Images",
"versions": [
{
"status": "unaffected",
"version": "2.15.2-0.3.hum1",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "libxml2-main",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:insights_proxy:1.5::el9"
],
"vendor": "Red Hat",
"product": "Red Hat Insights proxy 1.5",
"versions": [
{
"status": "unaffected",
"version": "1.5.5-1754504343",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "insights-proxy/insights-proxy-container-rhel9",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:6"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 6",
"packageName": "libxml2",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
}
]- Related CVEs
- CVE-2025-6021
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #17104 · Revision 1
- Added to Heist Feed
- Publisher date