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Use After Free The advisory has been revoked - it doesn't affect any version of package kernel-rt  (opens in a new tab)

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  • Snyk IDSNYK-ALMALINUX10-KERNELRT-13098321
  • published27 Sept 2025
  • disclosed1 Dec 2025
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Introduced: 27 Sep 2025

CVE-2025-22068  (opens in a new tab)
CWE-416  (opens in a new tab)

Amendment

The AlmaLinux security team deemed this advisory irrelevant for AlmaLinux:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt package and not the kernel-rt package as distributed by AlmaLinux.

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.