# ELSA-2021-1842: Security update for 2 packages

ELSA-2021-1842, released May 25, 2021, fixes 2 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/elsa-2021-1842
- Platform: Linux
- Released: May 25, 2021
- Priority: High (Closes CVE-2017-18926, high severity)
- CVEs: 2, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://linux.oracle.com/errata/ELSA-2021-1842.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [raptor2](https://patchblox.com/security/data/product/linux/raptor2.md) | ol 8 | 0:2.0.15-16.el8 |
| [raptor2-devel](https://patchblox.com/security/data/product/linux/raptor2-devel.md) | ol 8 | 0:2.0.15-16.el8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2017-18926](https://patchblox.com/security/data/cve/CVE-2017-18926.md) | High | libraptor2-0: raptor_xml_writer_start_element_common in raptor_xml_writer.c in Raptor RDFSyntax Library 2.0.15 miscalculates the ma... | 7.1 | 0.0312 |  |
| [CVE-2020-25713](https://patchblox.com/security/data/cve/CVE-2020-25713.md) | Routine | raptor2: Raptor is the RDF Parser Toolkit for Redland that provides a set of standalone RDF parsers, generating triples from R... | 6.5 | 0.0214 |  |

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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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo