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CVE-2026-105959

CVE-2026-105959 · Spice-server: spice: heap buffer overflow via glz dictionary max_encoders integer truncation

This page contains facts from public vulnerability sources. Check the original advisory before updating.

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

A flaw was found in spice-server. The GLZ encoder dictionary restore path truncates a size_t allocation size to int when calling the malloc callback, allowing a malicious authenticated SPICE client during VM live migration to trigger a massive heap buffer overflow by sending a crafted max_encoders value in migration data.

CVSS 7.5 · High · EPSS 0.5%

Published
Updated

Stack: system

Affected products and versions

  • red hat enterprise linux 6

    No fix published

  • red hat enterprise linux 7

    No fix published

  • red hat enterprise linux 8

    No fix published

  • spice Debian:12

    Versions
    • 0.15.1-1
    • 0.15.2-1
    • 0.16.0-1
    • 0.16.0-2
    • 0.16.0-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice Debian:13

    Versions
    • 0.15.2-1
    • 0.16.0-1
    • 0.16.0-2
    • 0.16.0-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice Debian:14

    Versions
    • 0.15.2-1
    • 0.16.0-1
    • 0.16.0-2
    • 0.16.0-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice Ubuntu:Pro:14.04:LTS

    Versions
    • 0.12.4-0nocelt1
    • 0.12.4-0nocelt1.1
    • 0.12.4-0nocelt1.1ubuntu1
    • 0.12.4-0nocelt2
    • 0.12.4-0nocelt2ubuntu1
    • 0.12.4-0nocelt2ubuntu1.1
    • 0.12.4-0nocelt2ubuntu1.2
    • 0.12.4-0nocelt2ubuntu1.3
    • 0.12.4-0nocelt2ubuntu1.4
    • 0.12.4-0nocelt2ubuntu1.5
    • 0.12.4-0nocelt2ubuntu1.6
    • 0.12.4-0nocelt2ubuntu1.7
    • 0.12.4-0nocelt2ubuntu1.8
    • 0.12.4-0nocelt2ubuntu1.8+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice Ubuntu:16.04:LTS

    Versions
    • 0.12.5-1.1ubuntu2
    • 0.12.6-4
    • 0.12.6-4ubuntu0.1
    • 0.12.6-4ubuntu0.2
    • 0.12.6-4ubuntu0.3
    • 0.12.6-4ubuntu0.4
    • 0.12.6-4ubuntu0.5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice-protocol Ubuntu:16.04:LTS

    Versions
    • 0.12.7-1
    • 0.12.10-1
    • 0.12.10-1ubuntu0.1
    • 0.12.10-1ubuntu0.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice-gtk Ubuntu:16.04:LTS

    Versions
    • 0.28-1ubuntu1
    • 0.29-1
    • 0.30-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice Ubuntu:18.04:LTS

    Versions
    • 0.12.8-2.2
    • 0.14.0-1
    • 0.14.0-1ubuntu1
    • 0.14.0-1ubuntu2
    • 0.14.0-1ubuntu2.1
    • 0.14.0-1ubuntu2.2
    • 0.14.0-1ubuntu2.4
    • 0.14.0-1ubuntu2.5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice-protocol Ubuntu:18.04:LTS

    Versions
    • 0.12.13-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice-gtk Ubuntu:18.04:LTS

    Versions
    • 0.33-3.3
    • 0.34-1.1
    • 0.34-1.1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice Ubuntu:20.04:LTS

    Versions
    • 0.14.2-0ubuntu2
    • 0.14.2-4ubuntu1
    • 0.14.2-4ubuntu2
    • 0.14.2-4ubuntu3
    • 0.14.2-4ubuntu3.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice-protocol Ubuntu:20.04:LTS

    Versions
    • 0.14.0-0ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice-gtk Ubuntu:20.04:LTS

    Versions
    • 0.37-0ubuntu1
    • 0.37-0ubuntu2
    • 0.37-2fakesync1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice Ubuntu:22.04:LTS

    Versions
    • 0.14.3-2.1ubuntu1
    • 0.15.0-2ubuntu1
    • 0.15.0-2ubuntu2
    • 0.15.0-2ubuntu3
    • 0.15.0-2ubuntu4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice-gtk Ubuntu:22.04:LTS

    Versions
    • 0.39-1
    • 0.39-3
    • 0.39-3ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice-protocol Ubuntu:22.04:LTS

    Versions
    • 0.14.3-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice Ubuntu:24.04:LTS

    Versions
    • 0.15.1-1
    • 0.15.1-1build1
    • 0.15.1-1build2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice-gtk Ubuntu:24.04:LTS

    Versions
    • 0.42-2
    • 0.42-2ubuntu1
    • 0.42-2ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice-protocol Ubuntu:24.04:LTS

    Versions
    • 0.14.3-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice Ubuntu:26.10

    Versions
    • 0.16.0-1
    • 0.16.0-2
    • 0.16.0-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • spice-gtk Ubuntu:26.10

    Versions
    • 0.42-4build1
    • 0.42-4build2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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