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

Vulnerability from cvelistv5 – Published: 2026-02-04 16:07 – Updated: 2026-05-11 21:59
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
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
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)
guessed Create a notification for this product.
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)
guessed Create a notification for this product.
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    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23063\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-02-04T17:16:16.987\",\"lastModified\":\"2026-06-17T10:20:47.797\",\"vulnStatus\":\"Analyzed\",\"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.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\\n\\nuacce: asegurar la liberaci\u00f3n segura de la cola con gesti\u00f3n de estado\\n\\nLlamar directamente a \u0027put_queue\u0027 conlleva riesgos ya que no puede garantizar que los recursos de \u0027uacce_queue\u0027 hayan sido completamente liberados de antemano. Por lo tanto, a\u00f1adir una operaci\u00f3n \u0027stop_queue\u0027 para el comando UACCE_CMD_PUT_Q y dejar la operaci\u00f3n \u0027put_queue\u0027 para la liberaci\u00f3n final de recursos garantiza la seguridad.\\n\\nLos estados de la cola se definen de la siguiente manera:\\n- UACCE_Q_ZOMBIE: Estado inicial\\n- UACCE_Q_INIT: Despu\u00e9s de abrir \u0027uacce\u0027\\n- UACCE_Q_STARTED: Despu\u00e9s de que se emite \u0027start\u0027 a trav\u00e9s de \u0027ioctl\u0027\\n\\nAl ejecutar \u0027poweroff -f\u0027 en virt mientras el acelerador sigue funcionando, \u0027uacce_fops_release\u0027 y \u0027uacce_remove\u0027 pueden ejecutarse concurrentemente. Esto puede causar que \u0027uacce_put_queue\u0027 dentro de \u0027uacce_fops_release\u0027 acceda a un puntero \u0027ops\u0027 NULL. Por lo tanto, a\u00f1adir comprobaciones de estado para evitar acceder a punteros liberados.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/misc/uacce/uacce.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"015d239ac0142ad0e26567fd890ef8d171f13709\",\"lessThan\":\"b457abeb5d962db88aaf60e249402fd3073dbfab\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"015d239ac0142ad0e26567fd890ef8d171f13709\",\"lessThan\":\"8b57bf1d3b1db692f34bce694a03e41be79f6016\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"015d239ac0142ad0e26567fd890ef8d171f13709\",\"lessThan\":\"336fb41a186e7c0415ae94fec9e23d1f04b87483\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"015d239ac0142ad0e26567fd890ef8d171f13709\",\"lessThan\":\"43f233eb6e7b9d88536881a9bc43726d0e34800d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"015d239ac0142ad0e26567fd890ef8d171f13709\",\"lessThan\":\"47634d70073890c9c37e39ab4ff93d4b585b028a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"015d239ac0142ad0e26567fd890ef8d171f13709\",\"lessThan\":\"92e4f11e29b98ef424ff72d6371acac03e5d973c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"015d239ac0142ad0e26567fd890ef8d171f13709\",\"lessThan\":\"26c08dabe5475d99a13f353d8dd70e518de45663\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/misc/uacce/uacce.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.7\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.7\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.249\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.199\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.162\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.122\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.68\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.8\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.7\",\"versionEndExcluding\":\"5.10.249\",\"matchCriteriaId\":\"5B635197-F169-4155-A953-A712BDD15376\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.199\",\"matchCriteriaId\":\"A247FBA6-BEB9-484F-B892-DD5517949CCD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.162\",\"matchCriteriaId\":\"6579E0D4-0641-479D-A4C3-0EF618798C55\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.122\",\"matchCriteriaId\":\"8EAAE395-0162-4BAF-9AD5-E9AF3C869C4F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.68\",\"matchCriteriaId\":\"52F38E19-0FDD-4992-9D6D-D4169D689598\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.8\",\"matchCriteriaId\":\"E65C6E79-7EBE-4C77-93F0-818CF5B38F4E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"17B67AA7-40D6-4AFA-8459-F200F3D7CFD1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"C47E4CC9-C826-4FA9-B014-7FE3D9B318B2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-28T07:18:30+00:00",
      "cve": "CVE-2026-23063",
      "id": "CVE-2026-23063",
      "initial_release_date": "2026-02-04T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: uacce: ensure safe queue release with state management",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23063.json",
      "version": "3"
    }
  }
}



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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.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.