# RHSA-2021:4156: Security update for 9 packages

RHSA-2021:4156, released November 9, 2021, fixes 4 CVEs across 9 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2021-4156
- Platform: Linux
- Released: Nov 9, 2021
- Priority: High (Closes CVE-2021-33198, high severity)
- CVEs: 4, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2021:4156

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [delve](https://patchblox.com/security/data/product/linux/delve.md) | RHEL 8 | 0:1.6.0-1.module+el8.5.0+10379+d6b83bd0 |
| [go-toolset](https://patchblox.com/security/data/product/linux/go-toolset.md) | RHEL 8 | 0:1.16.7-1.module+el8.5.0+12246+1aac4e3f |
| [golang](https://patchblox.com/security/data/product/linux/golang.md) | RHEL 8 | 0:1.16.7-1.module+el8.5.0+12246+1aac4e3f |
| [golang-bin](https://patchblox.com/security/data/product/linux/golang-bin.md) | RHEL 8 | 0:1.16.7-1.module+el8.5.0+12246+1aac4e3f |
| [golang-docs](https://patchblox.com/security/data/product/linux/golang-docs.md) | RHEL 8 | 0:1.16.7-1.module+el8.5.0+12246+1aac4e3f |
| [golang-misc](https://patchblox.com/security/data/product/linux/golang-misc.md) | RHEL 8 | 0:1.16.7-1.module+el8.5.0+12246+1aac4e3f |
| [golang-race](https://patchblox.com/security/data/product/linux/golang-race.md) | RHEL 8 | 0:1.16.7-1.module+el8.5.0+12246+1aac4e3f |
| [golang-src](https://patchblox.com/security/data/product/linux/golang-src.md) | RHEL 8 | 0:1.16.7-1.module+el8.5.0+12246+1aac4e3f |
| [golang-tests](https://patchblox.com/security/data/product/linux/golang-tests.md) | RHEL 8 | 0:1.16.7-1.module+el8.5.0+12246+1aac4e3f |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-33198](https://patchblox.com/security/data/cve/CVE-2021-33198.md) | High | delve: Go Toolset provides the Go programming language tools and libraries | 7.5 | 0.0337 |  |
| [CVE-2021-33195](https://patchblox.com/security/data/cve/CVE-2021-33195.md) | High | grafana: Grafana is an open source, feature rich metrics dashboard and graph editor for Graphite, InfluxDB & OpenTSDB | 7.5 | 0.0320 |  |
| [CVE-2021-36221](https://patchblox.com/security/data/cve/CVE-2021-36221.md) | High | delve: Go Toolset provides the Go programming language tools and libraries | 7.5 | 0.0311 |  |
| [CVE-2021-33197](https://patchblox.com/security/data/cve/CVE-2021-33197.md) | High | grafana: Grafana is an open source, feature rich metrics dashboard and graph editor for Graphite, InfluxDB & OpenTSDB | 7.5 | 0.0226 |  |

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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