# ELSA-2021-4385: Security update for 6 packages

ELSA-2021-4385, released November 16, 2021, fixes 2 CVEs across 6 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/elsa-2021-4385
- Platform: Linux
- Released: Nov 16, 2021
- Priority: High (Closes CVE-2021-3800, high severity)
- CVEs: 2, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://linux.oracle.com/errata/ELSA-2021-4385.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [glib2](https://patchblox.com/security/data/product/linux/glib2.md) | ol 8 | 0:2.56.4-156.el8 |
| [glib2-devel](https://patchblox.com/security/data/product/linux/glib2-devel.md) | ol 8 | 0:2.56.4-156.el8 |
| [glib2-doc](https://patchblox.com/security/data/product/linux/glib2-doc.md) | ol 8 | 0:2.56.4-156.el8 |
| [glib2-fam](https://patchblox.com/security/data/product/linux/glib2-fam.md) | ol 8 | 0:2.56.4-156.el8 |
| [glib2-static](https://patchblox.com/security/data/product/linux/glib2-static.md) | ol 8 | 0:2.56.4-156.el8 |
| [glib2-tests](https://patchblox.com/security/data/product/linux/glib2-tests.md) | ol 8 | 0:2.56.4-156.el8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-3800](https://patchblox.com/security/data/cve/CVE-2021-3800.md) | High | glib2: GLib provides the core application building blocks for libraries and applications written in C | 7.5 | 0.0057 |  |
| [CVE-2021-28153](https://patchblox.com/security/data/cve/CVE-2021-28153.md) | Routine | glib2: GLib provides the core application building blocks for libraries and applications written in C | 5.3 | 0.0271 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo