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CVE-2026-13201

CVSS 7.3 · YüksekNVD: Modified

Açıklama (NVD)

A flaw was found in KubeVirt's safepath package used by virt-handler. The OpenAtNoFollow function uses O_PATH|O_NOFOLLOW to obtain a file descriptor to a path leaf, but downstream operations resolve the path via /proc/self/fd/N using link-following syscalls. When the leaf is a symlink, the kernel dereferences it, defeating the intended no-follow protection. An attacker with access to a virt-launcher pod can exploit this to redirect virt-handler's IPC socket connections, including the notify socket used for VM domain lifecycle events. By hijacking this socket, the attacker can inject arbitrary domain events into virt-handler, causing it to take incorrect lifecycle actions, corrupt VM state in the Kubernetes API, or crash — resulting in sustained denial of VM management services for all virtual machines on the affected node. Additionally, the same symlink following flaw allows virt-handler to apply file ownership or permission changes to unintended host paths.

Yayın: 25.06.2026 · Son değişiklik: 26.10.2026 · Zayıflık: CWE-61

CVSS 3.1 metrikleri

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H

Saldırı vektörüYerel
KarmaşıklıkDüşük
Gereken yetkiDüşük
Kullanıcı etkileşimiGerekmez
KapsamDeğişir
GizlilikYok
BütünlükDüşük
ErişilebilirlikYüksek

Hesaplanan temel puan: 7.3. CVSS hesaplayıcıda incele

Referanslar

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