Total vulnerabilities in the database
In the Linux kernel, the following vulnerability has been resolved:
ublk: make sure ubq->canceling is set when queue is frozen
Now ublk driver depends on ubq->canceling for deciding if the request
can be dispatched via uring_cmd & io_uring_cmd_complete_in_task().
Once ubq->canceling is set, the uring_cmd can be done via ublk_cancel_cmd() and io_uring_cmd_done().
So set ubq->canceling when queue is frozen, this way makes sure that the flag can be observed from ublk_queue_rq() reliably, and avoids use-after-free on uring_cmd.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 6.13 | 6.13.11 |
| linux / linux_kernel | 6.14 | 6.14.2 |
| linux / linux_kernel | 6.7 | 6.12.23 |