# RHSA-2025:9304: xorg-x11-server-Xwayland security update

RHSA-2025:9304, released June 17, 2025, fixes 6 CVEs in xorg-x11-server-Xwayland (version 24.1.5-4.el10_0). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2025-9304
- Platform: Linux
- Released: Jun 17, 2025
- Priority: High (Closes CVE-2025-49177, high severity)
- CVEs: 6, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2025:9304

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [xorg-x11-server-Xwayland](https://patchblox.com/security/data/product/linux/xorg-x11-server-xwayland.md) | RHEL 10 | 24.1.5-4.el10_0 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-49177](https://patchblox.com/security/data/cve/CVE-2025-49177.md) | High | Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: data leak in xfixes extension's xfixessetclientdisconnectmode | 7.8 | 0.0044 |  |
| [CVE-2025-49176](https://patchblox.com/security/data/cve/CVE-2025-49176.md) | High | Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in big requests extension | 7.8 | 0.0037 |  |
| [CVE-2025-49175](https://patchblox.com/security/data/cve/CVE-2025-49175.md) | High | Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: out-of-bounds read in x rendering extension animated cursors | 7.8 | 0.0034 |  |
| [CVE-2025-49179](https://patchblox.com/security/data/cve/CVE-2025-49179.md) | High | Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x record extension | 7.8 | 0.0034 |  |
| [CVE-2025-49180](https://patchblox.com/security/data/cve/CVE-2025-49180.md) | High | Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x resize, rotate and reflect (randr) extension | 7.8 | 0.0033 |  |
| [CVE-2025-49178](https://patchblox.com/security/data/cve/CVE-2025-49178.md) | High | Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: unprocessed client request due to bytes to ignore | 7.8 | 0.0025 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo