Firejail before 0.9.64.4 allows attackers to bypass intended access restrictions because there is a TOCTOU race condition between a stat operation and an OverlayFS mount operation.
The product checks the state of a resource before using that resource, but the resource’s state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firejail | Firejail_project | * | 0.9.64.4 (excluding) |
| Firejail | Ubuntu | bionic | * |
| Firejail | Ubuntu | focal | * |
| Firejail | Ubuntu | groovy | * |
| Firejail | Ubuntu | trusty | * |
| Firejail | Ubuntu | upstream | * |
| Firejail | Ubuntu | xenial | * |