5.5Media

CVE-2026-6862Efivar: efivar: denial of service due to stack overflow in device path node parsing

Red Hat Red Hat Hardened Images; Red Hat Red Hat Enterprise Linux 10; Red Hat Red Hat Enterprise Linux 7; Red Hat Red Hat Enterprise Linux 8 Publicada: (hace 6 meses)

Descripción

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).

Debilidad (CWE): CWE-674

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

Coincidencias CPE (NVD) (1)

  • cpe:2.3:a:ubuntu:libefiboot:-:*:*:*:*:*:*:*