Bug 2524274 - CVE-2026-62941 incus: Incus: Cross-project instance copy bypasses target project restrictions via TOCTOU in config merge [fedora-all]
Summary: CVE-2026-62941 incus: Incus: Cross-project instance copy bypasses target proj...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: incus
Version: rawhide
Hardware: Unspecified
OS: Unspecified
urgent
urgent
Target Milestone: ---
Assignee: Neal Gompa
QA Contact:
URL:
Whiteboard: {"flaws": ["eaa814dd-d37b-4841-b983-2...
Depends On:
Blocks: CVE-2026-62941
TreeView+ depends on / blocked
 
Reported: 2026-08-26 07:59 UTC by Thibault Guittet
Modified: 2026-08-26 07:59 UTC (History)
7 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:


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Description Thibault Guittet 2026-08-26 07:59:16 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Incus is a system container and virtual machine manager. Prior to version 7.3.0, when copying an instance across projects, the project restriction check (`AllowInstanceCreation`) runs BEFORE the source instance's configuration is merged into the request. Dangerous configuration keys (including `security.privileged`, `raw.lxc`, `raw.apparmor`) from the source instance are merged AFTER the check passes, bypassing all project restrictions on the target project. Version 7.3.0 patches the issue.


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