CVE-2026-90231
Last modified
CVE-2026-90231 is a high-severity vulnerability rated 8.4/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: apparmor: fix unconfined user namespace restriction forced stack If a task is already confined by a stack the unprivileged transition restriction on unconfined is not correctly, applied. This results in an escape if two transitions through an unconfined profile can be executed. Fix this by pushing the check into the per profile label build.
Description
In the Linux kernel, the following vulnerability has been resolved: apparmor: fix unconfined user namespace restriction forced stack If a task is already confined by a stack the unprivileged transition restriction on unconfined is not correctly, applied. This results in an escape if two transitions through an unconfined profile can be executed. Fix this by pushing the check into the per profile label build. The check will always be done against unconfined and result in a stack of just the unconfined component when necessary.
Metrics
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 2d9da9b188b8cd3b579d7ef5ba5d334be9dd38fc, < 7d1099b86356df81c379159bfb8a598aaf83ce81; >= 2d9da9b188b8cd3b579d7ef5ba5d334be9dd38fc, < 7da0bdf0610f6d35bbb061536a47fc41646306f0; >= 2d9da9b188b8cd3b579d7ef5ba5d334be9dd38fc, < 08c2f7c8d4b1434cfae006f3daf4d1bce330b57b |
| Linux | Linux | 6.7 |
References
Timeline
- Published
- Last Modified
- Status
- Received
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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