CVE-2026-105959

Description

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.

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Produits concernés

• Red Hat Enterprise Linux 6
• Red Hat Enterprise Linux 7
• Red Hat Enterprise Linux 8

Scores CVSS

Faiblesses (CWE)

• CWE-190

Références

• https://access.redhat.com/security/cve/CVE-2026-105959
• https://bugzilla.redhat.com/show_bug.cgi?id=2554008
• https://gitlab.freedesktop.org/spice/spice/-/merge_requests/253

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories