{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-23063", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:37:45.953Z", "datePublished": "2026-02-04T16:07:45.426Z", "dateUpdated": "2026-02-09T08:38:02.269Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-02-09T08:38:02.269Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/misc/uacce/uacce.c"], "versions": [{"version": "015d239ac0142ad0e26567fd890ef8d171f13709", "lessThan": "b457abeb5d962db88aaf60e249402fd3073dbfab", "status": "affected", "versionType": "git"}, {"version": "015d239ac0142ad0e26567fd890ef8d171f13709", "lessThan": "8b57bf1d3b1db692f34bce694a03e41be79f6016", "status": "affected", "versionType": "git"}, {"version": "015d239ac0142ad0e26567fd890ef8d171f13709", "lessThan": "336fb41a186e7c0415ae94fec9e23d1f04b87483", "status": "affected", "versionType": "git"}, {"version": "015d239ac0142ad0e26567fd890ef8d171f13709", "lessThan": "43f233eb6e7b9d88536881a9bc43726d0e34800d", "status": "affected", "versionType": "git"}, {"version": "015d239ac0142ad0e26567fd890ef8d171f13709", "lessThan": "47634d70073890c9c37e39ab4ff93d4b585b028a", "status": "affected", "versionType": "git"}, {"version": "015d239ac0142ad0e26567fd890ef8d171f13709", "lessThan": "92e4f11e29b98ef424ff72d6371acac03e5d973c", "status": "affected", "versionType": "git"}, {"version": "015d239ac0142ad0e26567fd890ef8d171f13709", "lessThan": "26c08dabe5475d99a13f353d8dd70e518de45663", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/misc/uacce/uacce.c"], "versions": [{"version": "5.7", "status": "affected"}, {"version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.249", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.199", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.162", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.122", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.68", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.8", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.10.249"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.15.199"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.1.162"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.6.122"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.12.68"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.18.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.19"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/b457abeb5d962db88aaf60e249402fd3073dbfab"}, {"url": "https://git.kernel.org/stable/c/8b57bf1d3b1db692f34bce694a03e41be79f6016"}, {"url": "https://git.kernel.org/stable/c/336fb41a186e7c0415ae94fec9e23d1f04b87483"}, {"url": "https://git.kernel.org/stable/c/43f233eb6e7b9d88536881a9bc43726d0e34800d"}, {"url": "https://git.kernel.org/stable/c/47634d70073890c9c37e39ab4ff93d4b585b028a"}, {"url": "https://git.kernel.org/stable/c/92e4f11e29b98ef424ff72d6371acac03e5d973c"}, {"url": "https://git.kernel.org/stable/c/26c08dabe5475d99a13f353d8dd70e518de45663"}], "title": "uacce: ensure safe queue release with state management", "x_generator": {"engine": "bippy-1.2.0"}}}}

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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 'put_queue' conlleva riesgos ya que no puede garantizar que los recursos de 'uacce_queue' hayan sido completamente liberados de antemano. Por lo tanto, a\u00f1adir una operaci\u00f3n 'stop_queue' para el comando UACCE_CMD_PUT_Q y dejar la operaci\u00f3n 'put_queue' 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 'uacce'\n- UACCE_Q_STARTED: Despu\u00e9s de que se emite 'start' a trav\u00e9s de 'ioctl'\n\nAl ejecutar 'poweroff -f' en virt mientras el acelerador sigue funcionando, 'uacce_fops_release' y 'uacce_remove' pueden ejecutarse concurrentemente. Esto puede causar que 'uacce_put_queue' dentro de 'uacce_fops_release' acceda a un puntero 'ops' NULL. Por lo tanto, a\u00f1adir comprobaciones de estado para evitar acceder a punteros liberados."}], "id": "CVE-2026-23063", "lastModified": "2026-03-13T21:28:17.910", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-02-04T17:16:16.987", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/26c08dabe5475d99a13f353d8dd70e518de45663"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/336fb41a186e7c0415ae94fec9e23d1f04b87483"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/43f233eb6e7b9d88536881a9bc43726d0e34800d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/47634d70073890c9c37e39ab4ff93d4b585b028a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8b57bf1d3b1db692f34bce694a03e41be79f6016"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/92e4f11e29b98ef424ff72d6371acac03e5d973c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b457abeb5d962db88aaf60e249402fd3073dbfab"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: uacce: ensure safe queue release with state management", "id": "2436780", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2436780"}, "csaw": false, "details": ["No description is available for this CVE."], "name": "CVE-2026-23063", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-02-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-23063\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-23063\nhttps://lore.kernel.org/linux-cve-announce/2026020415-CVE-2026-23063-d727@gregkh/T"]}

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