# ALSA-2021:4316: Security update for 3 packages

ALSA-2021:4316, released November 9, 2021, fixes 1 CVE across 3 products. None of them is reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/fix/linux/alsa-2021-4316
- Platform: Linux
- Released: Nov 9, 2021
- Priority: Routine (Closes CVE-2020-18442)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/ALSA-2021:4316

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [zziplib](https://patchblox.com/security/data/product/linux/zziplib.md) | almalinux 8 | 0.13.68-9.el8 |
| [zziplib-devel](https://patchblox.com/security/data/product/linux/zziplib-devel.md) | almalinux 8 | 0.13.68-9.el8 |
| [zziplib-utils](https://patchblox.com/security/data/product/linux/zziplib-utils.md) | almalinux 8 | 0.13.68-9.el8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2020-18442](https://patchblox.com/security/data/cve/CVE-2020-18442.md) | Routine | zziplib: The zziplib is a lightweight library to easily extract data from zip files.  Security Fix(es):  * zziplib: infinite l... | 3.3 | 0.0075 |  |

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Data as of 2026-11-07T06:34:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo