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    CVE-2026-105959

    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.

    Published:Oct 8, 2026
    Last Modified:Nov 4, 2026
    EPS:Oct 16, 2026
    EPSS Score:0.0048
    CVSS Score:7.5

    Affected Products

    Vendor
    Red Hat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Els

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-190 Integer Overflow or Wraparound

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High