CVE-2026-109092 - Vulnerability Details - OpenCVE

Incorrectly handled negative sizes when processing ProcXvShmPutImage requests in the X.Org xwayland before 24.1.15 and X Server before 21.1.26 could be used by local authenticated X clients to crash the X server or execute code.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Vendors	Products
X.org Subscribe	Xorg-x11-server Subscribe Xwayland Subscribe

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://gitlab.freedesktop.org/xorg/xserver/-/commit/a4d7800f0f56469a082e3755bfa6b148c707075c

History

Fri, 13 Nov 2026 15:15:00 +0000

Type	Values Removed	Values Added
Description		Incorrectly handled negative sizes when processing ProcXvShmPutImage requests in the X.Org xwayland before 24.1.15 and X Server before 21.1.26 could be used by local authenticated X clients to crash the X server or execute code.
Title		X.Org Server XvShmPutImage Shared-Memory Bounds Overflow
First Time appeared		X.org X.org xorg-x11-server X.org xwayland
Weaknesses		CWE-191
CPEs		cpe:2.3:a:x.org:xorg-x11-server:::::::: cpe:2.3:a:x.org:xwayland::::::::
Vendors & Products		X.org X.org xorg-x11-server X.org xwayland
References		https://gitlab.freedesktop.org/xorg/xserver/-/commit/a4d7800f0f56469a082e3755bfa6b148c707075c
Metrics		cvssV3_1 `{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: suse

Published: 2026-11-13T15:00:03.444Z

Updated: 2026-11-13T15:00:03.444Z

Reserved: 2026-10-12T06:41:23.778Z

Link: CVE-2026-109092

Vulnrichment

No data.

NVD

Status : Awaiting Analysis

Published: 2026-11-13T15:17:29.740

Modified: 2026-11-13T15:17:29.833

Link: CVE-2026-109092

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-191

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