Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: data leak in xfixes extension's xfixessetclientdisconnectmode (X.Org xwayland)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.44 % · percentile 38 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Deferred
Description
A flaw was found in the XFIXES extension. The XFixesSetClientDisconnectMode handler does not validate the request length, allowing a client to read unintended memory from previous requests.
Weaknesses (CWE)
- CWE-200 — Exposure of Sensitive Information to an Unauthorized Actor
References
- https://access.redhat.com/errata/RHSA-2025:10258
- https://access.redhat.com/errata/RHSA-2025:9303
- https://access.redhat.com/errata/RHSA-2025:9304
- https://access.redhat.com/security/cve/CVE-2025-49177
- https://bugzilla.redhat.com/show_bug.cgi?id=2369955
- https://gitlab.freedesktop.org/xorg/xserver/-/commit/ab02fb96b1c701c3bb47617d965522c34befa6af
- https://www.x.org/wiki/Development/Security/
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L | redhat |
| CVSS 3.1 | MEDIUM 6.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L | NVD · secalert@redhat.com (Secondary) |
European references
- ENISA EUVD · EUVD-2025-18499
- GCVE · GCVE-0-2025-49177
Affected products
| Product | Versions |
|---|---|
| X.Org · xwayland | affected 0 < 24.1.7 |
| Red Hat · Red Hat Enterprise Linux 10 | unaffected 0:24.1.5-4.el10_0 < * |
| Red Hat · Red Hat Enterprise Linux 9 | unaffected 0:1.20.11-31.el9_6 < * |
| Red Hat · Red Hat Enterprise Linux 9 | unaffected 0:23.2.7-4.el9_6 < * |
| Red Hat · Red Hat Enterprise Linux 9.4 Extended Update Support | unaffected 0:22.1.9-6.el9_4 < * |
| Red Hat · Red Hat Enterprise Linux 6 | |
| Red Hat · Red Hat Enterprise Linux 6 | |
| Red Hat · Red Hat Enterprise Linux 7 | |
| Red Hat · Red Hat Enterprise Linux 7 | |
| Red Hat · Red Hat Enterprise Linux 8 | |
| Red Hat · Red Hat Enterprise Linux 8 | |
| Red Hat · Red Hat Enterprise Linux 8 | |
| Red Hat · Red Hat Enterprise Linux 9 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |