# RHSA-2021:2353: Security update for 11 packages

RHSA-2021:2353, released June 9, 2021, fixes 1 CVE across 11 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2021-2353
- Platform: Linux
- Released: Jun 9, 2021
- Priority: High (Closes CVE-2021-31957, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2021:2353

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [aspnetcore-runtime-5.0](https://patchblox.com/security/data/product/linux/aspnetcore-runtime-5.0.md) | RHEL 8 | 0:5.0.7-1.el8_4 |
| [aspnetcore-targeting-pack-5.0](https://patchblox.com/security/data/product/linux/aspnetcore-targeting-pack-5.0.md) | RHEL 8 | 0:5.0.7-1.el8_4 |
| [dotnet](https://patchblox.com/security/data/product/linux/dotnet.md) | RHEL 8 | 0:5.0.204-1.el8_4 |
| [dotnet-apphost-pack-5.0](https://patchblox.com/security/data/product/linux/dotnet-apphost-pack-5.0.md) | RHEL 8 | 0:5.0.7-1.el8_4 |
| [dotnet-host](https://patchblox.com/security/data/product/linux/dotnet-host.md) | RHEL 8 | 0:5.0.7-1.el8_4 |
| [dotnet-hostfxr-5.0](https://patchblox.com/security/data/product/linux/dotnet-hostfxr-5.0.md) | RHEL 8 | 0:5.0.7-1.el8_4 |
| [dotnet-runtime-5.0](https://patchblox.com/security/data/product/linux/dotnet-runtime-5.0.md) | RHEL 8 | 0:5.0.7-1.el8_4 |
| [dotnet-sdk-5.0](https://patchblox.com/security/data/product/linux/dotnet-sdk-5.0.md) | RHEL 8 | 0:5.0.204-1.el8_4 |
| [dotnet-targeting-pack-5.0](https://patchblox.com/security/data/product/linux/dotnet-targeting-pack-5.0.md) | RHEL 8 | 0:5.0.7-1.el8_4 |
| [dotnet-templates-5.0](https://patchblox.com/security/data/product/linux/dotnet-templates-5.0.md) | RHEL 8 | 0:5.0.204-1.el8_4 |
| [netstandard-targeting-pack-2.1](https://patchblox.com/security/data/product/linux/netstandard-targeting-pack-2.1.md) | RHEL 8 | 0:5.0.204-1.el8_4 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-31957](https://patchblox.com/security/data/cve/CVE-2021-31957.md) | High | ASP.NET Core Denial of Service Vulnerability | 7.5 | 0.0514 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo