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).
| Релиз | Статус | Примечание |
|---|---|---|
| devel | deferred | 2026-07-15 |
| esm-infra-legacy/trusty | deferred | 2026-07-15 |
| esm-infra-legacy/xenial | deferred | 2026-07-15 |
| esm-infra/bionic | deferred | 2026-07-15 |
| esm-infra/focal | deferred | 2026-07-15 |
| esm-infra/xenial | ignored | end of ESM support, was deferred [2026-07-15] |
| jammy | deferred | 2026-07-15 |
| noble | deferred | 2026-07-15 |
| questing | ignored | end of life, was deferred [2026-07-15] |
| resolute | deferred | 2026-07-15 |
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Ссылки на источники
EPSS
5.5 Medium
CVSS3
Связанные уязвимости
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).
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).
A flaw was found in libefiboot, a component of efivar. The device path ...
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).
EPSS
5.5 Medium
CVSS3