# xorg-server-source 2:21.1.18-1ubuntu1: xorg-server-source 2:21.1.18-1ubuntu1 for Ubuntu 25.10 (questing)

xorg-server-source 2:21.1.18-1ubuntu1, released June 16, 2025, fixes 7 CVEs in xorg-server-source. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/ubuntu-questing-xorg-server-source-2-21.1.18-1ubuntu1
- Platform: Linux
- Released: Jun 16, 2025
- Priority: High (Closes CVE-2025-49177, high severity)
- CVEs: 7, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [xorg-server-source](https://patchblox.com/security/data/product/linux/xorg-server-source.md) | Ubuntu 25.10 (questing) | 2:21.1.18-1ubuntu1 |

## 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-2022-49737](https://patchblox.com/security/data/cve/CVE-2022-49737.md) | High | xorg-server: In X.Org X server 20.11 through 21.1.16, when a client application uses easystroke for mouse gestures, the main threa... | 7.7 | 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 |  |

---

Data as of 2026-11-12T13:55:20Z 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

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.