CVE-2026-56003: CWE-122 Heap-based buffer overflow in X.Org libXfont2
A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code within the X server.
CVE-2026-56003: CWE-122 Heap-based buffer overflow in X.Org libXfont2
Description
A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code within the X server.
CVSS v3.1
Score 8.5high
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- suse
- Date Reserved
- 2026-06-18T09:26:55.988Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4e2371c9d9e3dbe3e2eb0a
Added to database: 07/08/2026, 10:16:17 UTC
Last updated: 07/08/2026, 10:16:17 UTC
Views: 1
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