CVE-2026-6862

MEDIUM

5.5

Descricao

A flaw was found in libefiboot, a component of efivar. The device path node parser in libefiboot fails to validate that each node's Length field is at least 4 bytes, which is the minimum size for an EFI (Extensible Firmware Interface) device path node header. A local user could exploit this vulnerability by providing a specially crafted device path node. This can lead to infinite recursion, causing stack exhaustion and a process crash, resulting in a denial of service (DoS).

Detalhes CVE

Pontuacao CVSS v3.15.5

SeveridadeMEDIUM

Vetor CVSSCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Vetor de ataqueLOCAL

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioREQUIRED

Publicado4/22/2026

Ultima modificacao4/22/2026

Fontenvd

Avistamentos honeypot0

Fraquezas (CWE)

CWE-674

Referencias

https://access.redhat.com/security/cve/CVE-2026-6862(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2459982(secalert@redhat.com)

Correlacoes IOC

Sem correlacoes registradas

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