CVE-2026-90231
In the Linux kernel, the following vulnerability has been resolved: apparmor: fix unconfined user namespace restriction forced stack If a task is already confi…
Impact
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.
Affected packages
This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/08c2f7c8d4b1434cfae006f3daf4d1bce330b57b
- https://git.kernel.org/stable/c/7d1099b86356df81c379159bfb8a598aaf83ce81
- https://git.kernel.org/stable/c/7da0bdf0610f6d35bbb061536a47fc41646306f0
- https://git.kernel.org/stable/c/fdd341654471cae4fbd9635d32b848cd0c8bc437