FKIE_CVE-2026-23063

Vulnerability from fkie_nvd - Published: 2026-02-04 17:16 - Updated: 2026-02-06 17:16
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: uacce: ensure safe queue release with state management Directly calling `put_queue` carries risks since it cannot guarantee that resources of `uacce_queue` have been fully released beforehand. So adding a `stop_queue` operation for the UACCE_CMD_PUT_Q command and leaving the `put_queue` operation to the final resource release ensures safety. Queue states are defined as follows: - UACCE_Q_ZOMBIE: Initial state - UACCE_Q_INIT: After opening `uacce` - UACCE_Q_STARTED: After `start` is issued via `ioctl` When executing `poweroff -f` in virt while accelerator are still working, `uacce_fops_release` and `uacce_remove` may execute concurrently. This can cause `uacce_put_queue` within `uacce_fops_release` to access a NULL `ops` pointer. Therefore, add state checks to prevent accessing freed pointers.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/26c08dabe5475d99a13f353d8dd70e518de45663
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/336fb41a186e7c0415ae94fec9e23d1f04b87483
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/43f233eb6e7b9d88536881a9bc43726d0e34800d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/47634d70073890c9c37e39ab4ff93d4b585b028a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8b57bf1d3b1db692f34bce694a03e41be79f6016
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/92e4f11e29b98ef424ff72d6371acac03e5d973c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b457abeb5d962db88aaf60e249402fd3073dbfab
Impacted products
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nuacce: ensure safe queue release with state management\n\nDirectly calling `put_queue` carries risks since it cannot\nguarantee that resources of `uacce_queue` have been fully released\nbeforehand. So adding a `stop_queue` operation for the\nUACCE_CMD_PUT_Q command and leaving the `put_queue` operation to\nthe final resource release ensures safety.\n\nQueue states are defined as follows:\n- UACCE_Q_ZOMBIE: Initial state\n- UACCE_Q_INIT: After opening `uacce`\n- UACCE_Q_STARTED: After `start` is issued via `ioctl`\n\nWhen executing `poweroff -f` in virt while accelerator are still\nworking, `uacce_fops_release` and `uacce_remove` may execute\nconcurrently. This can cause `uacce_put_queue` within\n`uacce_fops_release` to access a NULL `ops` pointer. Therefore, add\nstate checks to prevent accessing freed pointers."
    }
  ],
  "id": "CVE-2026-23063",
  "lastModified": "2026-02-06T17:16:22.703",
  "metrics": {},
  "published": "2026-02-04T17:16:16.987",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/26c08dabe5475d99a13f353d8dd70e518de45663"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/336fb41a186e7c0415ae94fec9e23d1f04b87483"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/43f233eb6e7b9d88536881a9bc43726d0e34800d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/47634d70073890c9c37e39ab4ff93d4b585b028a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8b57bf1d3b1db692f34bce694a03e41be79f6016"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/92e4f11e29b98ef424ff72d6371acac03e5d973c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b457abeb5d962db88aaf60e249402fd3073dbfab"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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