CVE-2026-6862

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).

• CWE-674

• https://access.redhat.com/security/cve/CVE-2026-6862Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2459982Issue Tracking, Third Party Advisory

Published

Apr 22, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

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