Bug 2521013 (CVE-2026-63125) - CVE-2026-63125 incus: Incus vulnerable to root RCE via image backup.yaml symlink
Summary: CVE-2026-63125 incus: Incus vulnerable to root RCE via image backup.yaml symlink
Keywords:
Status: NEW
Alias: CVE-2026-63125
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
urgent
urgent
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2524269
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-21 15:11 UTC by OSIDB Bzimport
Modified: 2026-08-26 08:00 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
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Embargoed:

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Description OSIDB Bzimport 2026-08-21 15:11:02 UTC 
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.
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