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CVE-2026-19730

PUBLISHED 13.08.2026

CNA: redhat

Podman: podman: quadlet install --replace non-truncating write retains removed host-access directives

Обновлено: 13.08.2026
The 'podman quadlet install --replace' command opens the existing destination file with O_CREATE|O_WRONLY but omits O_TRUNC. When the initial reflink copy attempt fails (common on non-reflink-capable filesystems including many RHEL default XFS configurations), the fallback in ReflinkOrCopy uses io.Copy which performs a non-truncating write. If the original Quadlet is larger than the new Quadlet, the file is not truncated and content from the original is preserved. The command completes with no warning. There is no risk of information leakage as the user already had access to the Quadlet in order to replace it, and in most cases, this would only lead to invalid Quadlet files. However, security-related options from the end of the old Quadlet could be included in the new Quadlet, and if the truncation resulted in a valid Quadlet file, this could result in undesirable behavior. For example, running podman quadlet install --replace to remove a single line from the end of a Quadlet - including security-sensitive content, like AddCapability - will fail, and the option will continue to be used. Further, with Volume Quadlets, this can include additional mounts which can cause content to be unintentionally exposed into containers. If, later, the image is updated then compromised content might be leaked to an attacker. The vulnerable code paths are in pkg/domain/infra/abi/quadlet.go (lines 338-360, O_CREATE|O_WRONLY without O_TRUNC) and vendor/go.podman.io/storage/pkg/fileutils/reflink_linux.go (lines 12-19, non-truncating io.Copy fallback).

CWE

Идентификатор Описание
CWE-459 The product does not properly "clean up" and remove temporary or supporting resources after they have been used.

CVSS

Оценка Severity Версия Базовый вектор
4.2 MEDIUM 3.1 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L

EPSS

Вероятность Severity Процентиль ? Дата расчёта
0.11% LOW 1.23 30.08.2026

Доп. Информация

Product Status

Red Hat Ansible Automation Platform 2
Product: Red Hat Ansible Automation Platform 2
Vendor: Red Hat
Default status: unaffected
СPE:
  • cpe:/a:redhat:ansible_automation_platform:2
Red Hat Ansible Automation Platform 2
Product: Red Hat Ansible Automation Platform 2
Vendor: Red Hat
Default status: unaffected
СPE:
  • cpe:/a:redhat:ansible_automation_platform:2
Red Hat Ansible Automation Platform 2
Product: Red Hat Ansible Automation Platform 2
Vendor: Red Hat
Default status: unaffected
СPE:
  • cpe:/a:redhat:ansible_automation_platform:2
Red Hat Ansible Automation Platform 2
Product: Red Hat Ansible Automation Platform 2
Vendor: Red Hat
Default status: unaffected
СPE:
  • cpe:/a:redhat:ansible_automation_platform:2
Red Hat Enterprise Linux 10
Product: Red Hat Enterprise Linux 10
Vendor: Red Hat
Default status: affected
СPE:
  • cpe:/o:redhat:enterprise_linux:10
Red Hat Enterprise Linux 8
Product: Red Hat Enterprise Linux 8
Vendor: Red Hat
Default status: unaffected
СPE:
  • cpe:/o:redhat:enterprise_linux:8
Red Hat Enterprise Linux 9
Product: Red Hat Enterprise Linux 9
Vendor: Red Hat
Default status: affected
СPE:
  • cpe:/o:redhat:enterprise_linux:9
Red Hat Hardened Images
Product: Red Hat Hardened Images
Vendor: Red Hat
Default status: affected
СPE:
  • cpe:/a:redhat:hummingbird:1
Red Hat OpenShift Container Platform 4
Product: Red Hat OpenShift Container Platform 4
Vendor: Red Hat
Default status: unaffected
СPE:
  • cpe:/a:redhat:openshift:4
Red Hat OpenShift Dev Spaces
Product: Red Hat OpenShift Dev Spaces
Vendor: Red Hat
Default status: unaffected
СPE:
  • cpe:/a:redhat:openshift_devspaces:3
Red Hat OpenShift Dev Spaces
Product: Red Hat OpenShift Dev Spaces
Vendor: Red Hat
Default status: unaffected
СPE:
  • cpe:/a:redhat:openshift_devspaces:3
Red Hat OpenShift Dev Spaces
Product: Red Hat OpenShift Dev Spaces
Vendor: Red Hat
Default status: unaffected
СPE:
  • cpe:/a:redhat:openshift_devspaces:3
Red Hat OpenShift Virtualization 4
Product: Red Hat OpenShift Virtualization 4
Vendor: Red Hat
Default status: unaffected
СPE:
  • cpe:/a:redhat:container_native_virtualization:4
Red Hat Quay 3
Product: Red Hat Quay 3
Vendor: Red Hat
Default status: unaffected
СPE:
  • cpe:/a:redhat:quay:3
Red Hat Quay 3
Product: Red Hat Quay 3
Vendor: Red Hat
Default status: unaffected
СPE:
  • cpe:/a:redhat:quay:3
 

Ссылки

CISA ADP Vulnrichment

Обновлено: 13.08.2026
Этот блок содержит дополнительную информацию, предоставленную программой CVE для этой уязвимости.

SSVC

Exploitation Automatable Technical Impact Версия Дата доступа
poc no partial 2.0.3 13.08.2026

Ссылки

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