vulnerability
Oracle Linux: CVE-2025-22068: ELSA-2025-15782: kernel security update (MODERATE) (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:L/AC:L/Au:M/C:C/I:C/A:C) | Apr 16, 2025 | Sep 22, 2025 | Dec 8, 2025 |
Severity
6
CVSS
(AV:L/AC:L/Au:M/C:C/I:C/A:C)
Published
Apr 16, 2025
Added
Sep 22, 2025
Modified
Dec 8, 2025
Description
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.
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.
Solution
oracle-linux-upgrade-kernel
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