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No exploitation reportedFix availableAwaiting NVD analysis

CVE-2026-109903

X.Org Server XvQueryImageAttributes Negative Size Reply

No exploitation reported by the sources we read.

  • Published2026-11-13
  • WeaknessCWE-191

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A buffer overread caused by casting a negative integer to CARD32 in XvQueryImageAttributes in X.Org X Server before 21.1.26 and xwayland before 24.1.15 could be used to causes crashes by authenticated X clients.

Timeline

dates in UTC
  1. 2026-11-1310:50CVE publishedCNA

Versions per branch

Products declared by the CNA2 products

As suse, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-13

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • xorg-serverUbuntu:Pro:20.04:LTSall versions · no fixed version listed
  • xorg-serverUbuntu:Pro:18.04:LTSall versions · no fixed version listedand 1 other package
  • xorg-serverUbuntu:Pro:16.04:LTSall versions · no fixed version listedand 1 other package
  • xorg-serverUbuntu:Pro:14.04:LTSall versions · no fixed version listed
  • xorg-serverEchoall versions · fixed in 2:21.1.16-1.3+deb13u4+e3
  • xorg-serverAlpaquita:streamfrom 21.1.4-r1 · fixed in 21.1.26-r0
  • xorg-serverAlpaquita:25from 21.1.16-r0 · fixed in 21.1.26-r0
  • xorg-serverAlpaquita:23from 21.1.4-r1 · fixed in 21.1.26-r0

15 more package ranges on OSV.dev

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.17.82026-11-13
  • CNAweakness (CWE)CWE-1912026-11-13
  • NVDweakness (CWE)CWE-191read 2026-11-13
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2026-11-13
Last Modified
2026-11-13
NVD status
Awaiting Analysis
GitHub Advisory
GHSA-gxwv-p9wx-4gq4

Frequently asked questions

What is CVE-2026-109903?

A buffer overread caused by casting a negative integer to CARD32 in XvQueryImageAttributes in X.Org X Server before 21.1.26 and xwayland before 24.1.15 could be used to causes crashes by authenticated X clients.

Is CVE-2026-109903 actively exploited?

Active exploitation of CVE-2026-109903 has not been confirmed.

What is the CVSS score for CVE-2026-109903?

CVE-2026-109903 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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