# RHSA-2026:85239: Security update for 7 packages

RHSA-2026:85239, released October 20, 2026, fixes 3 CVEs across 7 products. None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-85239
- Platform: Linux
- Released: Oct 20, 2026
- Priority: Urgent (Closes CVE-2026-19445, rated Critical)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:85239

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [platform-python](https://patchblox.com/security/data/product/linux/platform-python.md) | RHEL 8 | 0:3.6.8-79.el8_10 |
| [platform-python-debug](https://patchblox.com/security/data/product/linux/platform-python-debug.md) | RHEL 8 | 0:3.6.8-79.el8_10 |
| [platform-python-devel](https://patchblox.com/security/data/product/linux/platform-python-devel.md) | RHEL 8 | 0:3.6.8-79.el8_10 |
| [python3-idle](https://patchblox.com/security/data/product/linux/python3-idle.md) | RHEL 8 | 0:3.6.8-79.el8_10 |
| [python3-libs](https://patchblox.com/security/data/product/linux/python3-libs.md) | RHEL 8 | 0:3.6.8-79.el8_10 |
| [python3-test](https://patchblox.com/security/data/product/linux/python3-test.md) | RHEL 8 | 0:3.6.8-79.el8_10 |
| [python3-tkinter](https://patchblox.com/security/data/product/linux/python3-tkinter.md) | RHEL 8 | 0:3.6.8-79.el8_10 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-19445](https://patchblox.com/security/data/cve/CVE-2026-19445.md) | Urgent | Use-after-free of a server-side SSLContext when sni_callback switches contexts | 9.2 | 0.0052 |  |
| [CVE-2026-19553](https://patchblox.com/security/data/cve/CVE-2026-19553.md) | High | SSLContext.wrap_bio() missing validation of server_hostname parameter | 8.1 | 0.0055 |  |
| [CVE-2026-12345](https://patchblox.com/security/data/cve/CVE-2026-12345.md) | High | Race condition in tempfile.TemporaryDirectory cleanup allows deleting files outside the temporary directory | 8.1 | 0.0034 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo