CVE-2026-6862: Red Hat Hardened Images, отказ на услуга

Описание

Оригинално описание

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).

Засегнати продукти

• Red Hat Red Hat Hardened Images: от 39-13.1.hum1 нататък
• Red Hat Red Hat Enterprise Linux 10
• Red Hat Red Hat Enterprise Linux 7
• Red Hat Red Hat Enterprise Linux 8
• Red Hat Red Hat Enterprise Linux 9
• Red Hat Red Hat OpenShift Container Platform 4
• Red Hat Red Hat OpenShift Container Platform 4

Вид слабост

• CWE-674 Uncontrolled Recursion

История

Други уязвимости в Red Hat Red Hat Hardened Images

• 7.1CVE-2026-82976
• 6.5CVE-2026-121259
• 6.5CVE-2026-119843
• 6.5CVE-2026-120831
• 7.4CVE-2026-120830

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-6862
• https://nvd.nist.gov/vuln/detail/CVE-2026-6862
• https://access.redhat.com/errata/RHSA-2026:69321
• https://access.redhat.com/security/cve/CVE-2026-6862
• https://bugzilla.redhat.com/show_bug.cgi?id=2459982