A flaw was found in the io-workqueue implementation in the Linux kernel versions prior to 5.15-rc1. The kernel can panic when an improper cancellation operation triggers the submission of new io-uring operations during a shortage of free space. This flaw allows a local user with permissions to execute io-uring requests to possibly crash the system.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | - | 5.14.x |
| fedoraproject / fedora | 35 | 35.x |