# CVE-2018-9251: libxml2: The libxml2 library is a development toolbox providing the implementation of various XML standards.  Security Fix(es)...

CVE-2018-9251 is fixed in 3 products on 1 platform, first by RHSA-2020:1827, released April 28, 2020. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-9251
- Priority: Routine
- CVSS: 5.3 (Moderate)
- EPSS: 0.0236
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 28, 2020

## Description

The libxml2 library is a development toolbox providing the implementation of various XML standards.  Security Fix(es):  * libxml2: NULL pointer dereference in xmlXPathCompOpEval() function in xpath.c (CVE-2018-14404)  * libxml2: infinite loop in xz_decomp function in xzlib.c (CVE-2018-9251)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.  Additional Changes:  For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.2 Release Notes linked from the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libxml2 RHEL 8 | 0:2.9.7-7.el8 | [RHSA-2020:1827](https://patchblox.com/security/data/fix/linux/rhsa-2020-1827.md) | Apr 28, 2020 |
| Linux | libxml2 ol 8 | 0:2.9.7-7.0.1.el8 | [ELSA-2020-1827](https://patchblox.com/security/data/fix/linux/elsa-2020-1827.md) | May 5, 2020 |
| Linux | libxml2-devel RHEL 8 | 0:2.9.7-7.el8 | [RHSA-2020:1827](https://patchblox.com/security/data/fix/linux/rhsa-2020-1827.md) | Apr 28, 2020 |
| Linux | libxml2-devel ol 8 | 0:2.9.7-7.0.1.el8 | [ELSA-2020-1827](https://patchblox.com/security/data/fix/linux/elsa-2020-1827.md) | May 5, 2020 |
| Linux | python3-libxml2 RHEL 8 | 0:2.9.7-7.el8 | [RHSA-2020:1827](https://patchblox.com/security/data/fix/linux/rhsa-2020-1827.md) | Apr 28, 2020 |
| Linux | python3-libxml2 ol 8 | 0:2.9.7-7.0.1.el8 | [ELSA-2020-1827](https://patchblox.com/security/data/fix/linux/elsa-2020-1827.md) | May 5, 2020 |

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Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo