Array index error in LightDM (aka Light Display Manager) 1.14.3, 1.16.x before 1.16.6…
Priority LOW 30CWE-129Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-129 and the CVSS impact.
Summary
Array index error in LightDM (aka Light Display Manager) 1.14.3, 1.16.x before 1.16.6 when the XDMCP server is enabled allows remote attackers to cause a denial of service (process crash) via an XDMCP request packet with no address.
Why it matters now
EPSS 0.01748 77th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:lightdm_project:lightdm:1.14.3:*:*:*:*:*:*:* | 1.14.3 | Vulnerable | Lightdm Project |
| cpe:2.3:a:lightdm_project:lightdm:1.16:*:*:*:*:*:*:* | 1.16 | Vulnerable | Lightdm Project |
| cpe:2.3:a:lightdm_project:lightdm:1.16.1:*:*:*:*:*:*:* | 1.16.1 | Vulnerable | Lightdm Project |
| cpe:2.3:a:lightdm_project:lightdm:1.16.2:*:*:*:*:*:*:* | 1.16.2 | Vulnerable | Lightdm Project |
| cpe:2.3:a:lightdm_project:lightdm:1.16.3:*:*:*:*:*:*:* | 1.16.3 | Vulnerable | Lightdm Project |
| cpe:2.3:a:lightdm_project:lightdm:1.16.4:*:*:*:*:*:*:* | 1.16.4 | Vulnerable | Lightdm Project |
- cpe:2.3:a:lightdm_project:lightdm:1.14.3:*:*:*:*:*:*:* Versions 1.14.3 Vulnerable ·Lightdm Project
- cpe:2.3:a:lightdm_project:lightdm:1.16:*:*:*:*:*:*:* Versions 1.16 Vulnerable ·Lightdm Project
- cpe:2.3:a:lightdm_project:lightdm:1.16.1:*:*:*:*:*:*:* Versions 1.16.1 Vulnerable ·Lightdm Project
- cpe:2.3:a:lightdm_project:lightdm:1.16.2:*:*:*:*:*:*:* Versions 1.16.2 Vulnerable ·Lightdm Project
- cpe:2.3:a:lightdm_project:lightdm:1.16.3:*:*:*:*:*:*:* Versions 1.16.3 Vulnerable ·Lightdm Project
- cpe:2.3:a:lightdm_project:lightdm:1.16.4:*:*:*:*:*:*:* Versions 1.16.4 Vulnerable ·Lightdm Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2015-8316
- 2026-10-03 Alias added: GHSA-4p4w-jwhc-qwjq
References
More Lightdm Project Lightdm vulnerabilities
- TI-2017-05013 In LightDM through 1.22.0, a directory traversal issue in debian/guest-account.sh allows… CVSS 3.0HIGH 7.3
- TI-2011-02959 Improper privilege management in lightdm CVSS 3.1HIGH 7.8
- TI-2017-06397 LightDM through 1.22.0, when systemd is used in Ubuntu 16.10 and 17.x, allows physically… CVSS 3.0MEDIUM 4.6
Sources
- CVE-2015-8316 · CVE Program
- CVE-2015-8316 · NVD
- FIRST EPSS
- GHSA-4p4w-jwhc-qwjq · GitHub Advisory Database · CC BY 4.0
- CVE-2015-8316 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences