# RHSA-2021:4386: Security update for 25 packages

RHSA-2021:4386, released November 9, 2021, fixes 1 CVE across 25 products. None of them is reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2021-4386
- Platform: Linux
- Released: Nov 9, 2021
- Priority: Routine (Closes CVE-2018-20673)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2021:4386

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [cpp](https://patchblox.com/security/data/product/linux/cpp.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [gcc](https://patchblox.com/security/data/product/linux/gcc.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [gcc-c++](https://patchblox.com/security/data/product/linux/gcc-c.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [gcc-gdb-plugin](https://patchblox.com/security/data/product/linux/gcc-gdb-plugin.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [gcc-gfortran](https://patchblox.com/security/data/product/linux/gcc-gfortran.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [gcc-offload-nvptx](https://patchblox.com/security/data/product/linux/gcc-offload-nvptx.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [gcc-plugin-devel](https://patchblox.com/security/data/product/linux/gcc-plugin-devel.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [libasan](https://patchblox.com/security/data/product/linux/libasan.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [libatomic](https://patchblox.com/security/data/product/linux/libatomic.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [libatomic-static](https://patchblox.com/security/data/product/linux/libatomic-static.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [libgcc](https://patchblox.com/security/data/product/linux/libgcc.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [libgfortran](https://patchblox.com/security/data/product/linux/libgfortran.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [libgomp](https://patchblox.com/security/data/product/linux/libgomp.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [libgomp-offload-nvptx](https://patchblox.com/security/data/product/linux/libgomp-offload-nvptx.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [libitm](https://patchblox.com/security/data/product/linux/libitm.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [libitm-devel](https://patchblox.com/security/data/product/linux/libitm-devel.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [liblsan](https://patchblox.com/security/data/product/linux/liblsan.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [libquadmath](https://patchblox.com/security/data/product/linux/libquadmath.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [libquadmath-devel](https://patchblox.com/security/data/product/linux/libquadmath-devel.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [libstdc++](https://patchblox.com/security/data/product/linux/libstdc.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [libstdc++-devel](https://patchblox.com/security/data/product/linux/libstdc-devel.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [libstdc++-docs](https://patchblox.com/security/data/product/linux/libstdc-docs.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [libstdc++-static](https://patchblox.com/security/data/product/linux/libstdc-static.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [libtsan](https://patchblox.com/security/data/product/linux/libtsan.md) | RHEL 8 | 0:8.5.0-3.el8 |
| [libubsan](https://patchblox.com/security/data/product/linux/libubsan.md) | RHEL 8 | 0:8.5.0-3.el8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2018-20673](https://patchblox.com/security/data/cve/CVE-2018-20673.md) | Routine | cpp: The gcc packages provide compilers for C, C++, Java, Fortran, Objective C, and Ada 95 GNU, as well as related support... | 5.5 | 0.0164 |  |

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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