Libxml: heap use after free (uaf) leads to denial of service (dos)
A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath elements under certain circumstances when the XML schematron has the schema elements. This flaw allows a malicious actor to craft a malicious XML document used as input for libxml, resulting in the program's crash using libxml or other possible undefined behaviors.
Evidence and details
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-2025-49794
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 OpenShift Container Platform 4.20
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 Web Terminal 1.11 on RHEL 9
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 Web Terminal 1.11 on RHEL 9
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 Web Terminal 1.12 on RHEL 9
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
RHOSS-1.36-RHEL-8
Source reference: /containers/cna/affected/31/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
RHOSS-1.36-RHEL-8
Source reference: /containers/cna/affected/32/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
RHOSS-1.36-RHEL-8
Source reference: /containers/cna/affected/33/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
RHOSS-1.36-RHEL-8
Source reference: /containers/cna/affected/34/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
RHOSS-1.36-RHEL-8
Source reference: /containers/cna/affected/35/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
RHOSS-1.36-RHEL-8
Source reference: /containers/cna/affected/36/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
RHOSS-1.36-RHEL-8
Source reference: /containers/cna/affected/37/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
RHOSS-1.36-RHEL-8
Source reference: /containers/cna/affected/38/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
RHOSS-1.36-RHEL-8
Source reference: /containers/cna/affected/39/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
RHOSS-1.36-RHEL-8
Source reference: /containers/cna/affected/40/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
RHOSS-1.36-RHEL-8
Source reference: /containers/cna/affected/41/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
cert-manager operator for Red Hat OpenShift 1.16
Source reference: /containers/cna/affected/42/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
OpenShift File Integrity Operator - FIO 1
Source reference: /containers/cna/affected/43/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/44/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/45/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat 3scale API Management Platform 2
Source reference: /containers/cna/affected/46/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat 3scale API Management Platform 2
Source reference: /containers/cna/affected/47/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/48/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
- Related CVEs
- CVE-2025-49794
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics