# RHSA-2026:82015: Security update for 8 packages

RHSA-2026:82015, released October 13, 2026, fixes 3 CVEs across 8 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-82015
- Platform: Linux
- Released: Oct 13, 2026
- Priority: High (Closes CVE-2026-93523, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:82015

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [xorg-x11-server-Xdmx](https://patchblox.com/security/data/product/linux/xorg-x11-server-xdmx.md) | RHEL 9 | 0:1.20.11-34.el9_8.4 |
| [xorg-x11-server-Xephyr](https://patchblox.com/security/data/product/linux/xorg-x11-server-xephyr.md) | RHEL 9 | 0:1.20.11-34.el9_8.4 |
| [xorg-x11-server-Xnest](https://patchblox.com/security/data/product/linux/xorg-x11-server-xnest.md) | RHEL 9 | 0:1.20.11-34.el9_8.4 |
| [xorg-x11-server-Xorg](https://patchblox.com/security/data/product/linux/xorg-x11-server-xorg.md) | RHEL 9 | 0:1.20.11-34.el9_8.4 |
| [xorg-x11-server-Xvfb](https://patchblox.com/security/data/product/linux/xorg-x11-server-xvfb.md) | RHEL 9 | 0:1.20.11-34.el9_8.4 |
| [xorg-x11-server-common](https://patchblox.com/security/data/product/linux/xorg-x11-server-common.md) | RHEL 9 | 0:1.20.11-34.el9_8.4 |
| [xorg-x11-server-devel](https://patchblox.com/security/data/product/linux/xorg-x11-server-devel.md) | RHEL 9 | 0:1.20.11-34.el9_8.4 |
| [xorg-x11-server-source](https://patchblox.com/security/data/product/linux/xorg-x11-server-source.md) | RHEL 9 | 0:1.20.11-34.el9_8.4 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-93521](https://patchblox.com/security/data/cve/CVE-2026-93521.md) | High | X.Org Server RandR ChangeProviderProperty Heap Buffer Overflow | 7.8 | 0.0020 |  |
| [CVE-2026-93523](https://patchblox.com/security/data/cve/CVE-2026-93523.md) | High | X.Org Server XInput2 PassiveUngrabDevice Out-of-Bounds Write | 7.8 | 0.0020 |  |
| [CVE-2026-88812](https://patchblox.com/security/data/cve/CVE-2026-88812.md) | High | X.Org Server XKB SetGeometry TextDoodad Double Free | 7.8 | 0.0019 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo