CVE-2026-63125
CriticalCVSS 9.9Summary
Incus prior to version 7.3.0 allows an unprivileged, project-confined user (a non-admin TLS/RBAC identity with `can_create_images` and `can_create_instances`) to execute arbitrary code as root on the host. A crafted image ships `backup.yaml` as a symlink to a host file. When the root daemon writes the instance's backup file, it follows the symlink.
Risk Assessment
A user with limited privileges can gain full control over the host, potentially compromising system and data integrity.
Recommendation
Update Incus to version 7.3.0 or later, which includes a fix for this issue.
Original NVD description (English source)
Incus is a system container and virtual machine manager. Prior to version 7.3.0, an unprivileged, project-confined Incus user (a non-admin TLS/RBAC identity with `can_create_images` and `can_create_instances`) can execute arbitrary code as root on the host. A crafted image ships `backup.yaml` as a symlink to a host file. When the root daemon writes the instance's backup file, it follows the symlink. Version 7.3.0 patches the issue.