Summary
It was discovered that Nova did not strip internal _nova-prefixed
scheduler hints supplied by users on instance creation. An attacker could
possibly use this issue to bypass Placement resource claims and
scheduling constraint enforcement.
Fixed packages 4
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 22.04 LTS 22.04:LTS | nova | 3:25.2.1-0ubuntu2.11 |
| Ubuntu · 24.04 LTS 24.04:LTS | nova | 3:29.2.0-0ubuntu1.7 |
| Ubuntu · 25.10 | nova | 3:32.0.0-0ubuntu1.3 |
| Ubuntu · 26.04 LTS 26.04:LTS | nova | 3:33.0.0-0ubuntu3.1 |
References
-
report
https://ubuntu.com/security/CVE-2026-46448