Answer in brief
CVE-2026-109091 records a High severity (CVSS 7.8) vulnerability in X.Org Server EDID DS_RANGES Out-Of-Bounds Write. The current sources do not mark it as known exploited. The current feed maps X.Org/xorg-x11-server (generic), X.Org/xwayland (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps X.Org/xorg-x11-server (generic), X.Org/xwayland (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| X.Org/xorg-x11-servergeneric | >=0 <21.1.26 | 21.1.26 |
| X.Org/xwaylandgeneric | >=0 <24.1.15 | 24.1.15 |
Published upstream
Nov 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 13, 2026
A buffer overflow in handling EDID Display-Range descriptors in X.Org xwayland before 24.1.15 and X Server before 21.1.26 could be used by malicious monitors to crash the x server or execute cote.
Quoted source text, attributed separately from HOL analysis.