CVE-2026-23063 (GCVE-0-2026-23063)

Vulnerability from cvelistv5 – Published: 2026-02-04 16:07 – Updated: 2026-02-09 08:38
VLAI?
Title
uacce: ensure safe queue release with state management
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 015d239ac0142ad0e26567fd890ef8d171f13709 , < b457abeb5d962db88aaf60e249402fd3073dbfab (git)
Affected: 015d239ac0142ad0e26567fd890ef8d171f13709 , < 8b57bf1d3b1db692f34bce694a03e41be79f6016 (git)
Affected: 015d239ac0142ad0e26567fd890ef8d171f13709 , < 336fb41a186e7c0415ae94fec9e23d1f04b87483 (git)
Affected: 015d239ac0142ad0e26567fd890ef8d171f13709 , < 43f233eb6e7b9d88536881a9bc43726d0e34800d (git)
Affected: 015d239ac0142ad0e26567fd890ef8d171f13709 , < 47634d70073890c9c37e39ab4ff93d4b585b028a (git)
Affected: 015d239ac0142ad0e26567fd890ef8d171f13709 , < 92e4f11e29b98ef424ff72d6371acac03e5d973c (git)
Affected: 015d239ac0142ad0e26567fd890ef8d171f13709 , < 26c08dabe5475d99a13f353d8dd70e518de45663 (git)
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    Linux Linux Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 5.10.249 , ≤ 5.10.* (semver)
Unaffected: 5.15.199 , ≤ 5.15.* (semver)
Unaffected: 6.1.162 , ≤ 6.1.* (semver)
Unaffected: 6.6.122 , ≤ 6.6.* (semver)
Unaffected: 6.12.68 , ≤ 6.12.* (semver)
Unaffected: 6.18.8 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
            "drivers/misc/uacce/uacce.c"
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          "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-09T08:38:02.269Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "dateReserved": "2026-01-13T15:37:45.953Z",
    "dateUpdated": "2026-02-09T08:38:02.269Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23063\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-02-04T17:16:16.987\",\"lastModified\":\"2026-02-06T17:16:22.703\",\"vulnStatus\":\"Awaiting Analysis\",\"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.\"}],\"metrics\":{},\"references\":[{\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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