# ALSA-2024:2996: xorg-x11-server-Xwayland security update

ALSA-2024:2996, released May 22, 2024, fixes 9 CVEs in xorg-x11-server-Xwayland (version 21.1.3-15.el8). None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/alsa-2024-2996
- Platform: Linux
- Released: May 22, 2024
- Priority: Urgent (Closes CVE-2023-6816, rated Critical)
- CVEs: 9, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/ALSA-2024:2996

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [xorg-x11-server-Xwayland](https://patchblox.com/security/data/product/linux/xorg-x11-server-xwayland.md) | almalinux 8 | 21.1.3-15.el8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2023-6816](https://patchblox.com/security/data/cve/CVE-2023-6816.md) | Urgent | xorg-server: A flaw was found in X.Org server | 9.8 | 0.0211 |  |
| [CVE-2023-6478](https://patchblox.com/security/data/cve/CVE-2023-6478.md) | High | xnest: A flaw was found in xorg-server | 7.6 | 0.0162 |  |
| [CVE-2023-6377](https://patchblox.com/security/data/cve/CVE-2023-6377.md) | High | xnest: A flaw was found in xorg-server | 7.8 | 0.0157 |  |
| [CVE-2024-21885](https://patchblox.com/security/data/cve/CVE-2024-21885.md) | High | xwayland: A flaw was found in X.Org server | 7.8 | 0.0142 |  |
| [CVE-2024-21886](https://patchblox.com/security/data/cve/CVE-2024-21886.md) | High | xnest: A heap buffer overflow flaw was found in the DisableDevice function in theX.Org server | 7.8 | 0.0142 |  |
| [CVE-2024-0229](https://patchblox.com/security/data/cve/CVE-2024-0229.md) | High | xnest: An out-of-bounds memory access flaw was found in the X.Org server | 7.8 | 0.0123 |  |
| [CVE-2023-5367](https://patchblox.com/security/data/cve/CVE-2023-5367.md) | High | xnest: A out-of-bounds write flaw was found in the xorg-x11-server | 7.8 | 0.0061 |  |
| [CVE-2024-0409](https://patchblox.com/security/data/cve/CVE-2024-0409.md) | High | xnest: A flaw was found in the X.Org server | 7.8 | 0.0036 |  |
| [CVE-2024-0408](https://patchblox.com/security/data/cve/CVE-2024-0408.md) | Routine | xnest: A flaw was found in the X.Org server | 5.5 | 0.0032 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo