PT-2026-65461 · Xen · Xen

CVE-2026-42493 · Publicado 2026-07-28 · Atualizado 2026-07-28

Mitre

CVSS v3.1

7.5

Alta

Vetor base

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Addressing certain issues, in particular related to operations which may take excessively long and therefore would need preemption, has turned out overly costly. Since alternatives (HVM/PVH: HAP, PV: shim) are commonly available, the decision was to deprecate the functionality, while still retaining it for people to use at their own (security) risk. Memory-wise small enough guests may still be okay to run.

Correção

Resource Exhaustion

Enumeração de Fraquezas

CWE-400

Identificadores relacionados

CVE-2026-42493

Produtos afetados

Xen

Referências · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-42493 · Nota de Segurança
• https://xenbits.xenproject.org/xsa/advisory-495.html · Nota
• http://xenbits.xen.org/xsa/advisory-495.html · Nota