# ELSA-2021-2359: Security update for 5 packages

ELSA-2021-2359, released June 10, 2021, fixes 1 CVE across 5 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/elsa-2021-2359
- Platform: Linux
- Released: Jun 10, 2021
- Priority: High (Closes CVE-2021-25217, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://linux.oracle.com/errata/ELSA-2021-2359.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [dhcp-client](https://patchblox.com/security/data/product/linux/dhcp-client.md) | ol 8 | 12:4.3.6-44.el8_4.1 |
| [dhcp-common](https://patchblox.com/security/data/product/linux/dhcp-common.md) | ol 8 | 12:4.3.6-44.el8_4.1 |
| [dhcp-libs](https://patchblox.com/security/data/product/linux/dhcp-libs.md) | ol 8 | 12:4.3.6-44.el8_4.1 |
| [dhcp-relay](https://patchblox.com/security/data/product/linux/dhcp-relay.md) | ol 8 | 12:4.3.6-44.el8_4.1 |
| [dhcp-server](https://patchblox.com/security/data/product/linux/dhcp-server.md) | ol 8 | 12:4.3.6-44.el8_4.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-25217](https://patchblox.com/security/data/cve/CVE-2021-25217.md) | High | dhcp-libs: The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get t... | 8.8 | 0.0612 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo