{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-21909", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-29T08:45:45.786Z", "datePublished": "2025-04-01T15:40:48.680Z", "dateUpdated": "2025-11-03T19:38:54.220Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T07:24:10.345Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: nl80211: reject cooked mode if it is set along with other flags\n\nIt is possible to set both MONITOR_FLAG_COOK_FRAMES and MONITOR_FLAG_ACTIVE\nflags simultaneously on the same monitor interface from the userspace. 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cooked mode if it is set along with other flags", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T19:38:54.220Z"}}]}}

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This\ncauses a sub-interface to be created with no IEEE80211_SDATA_IN_DRIVER bit\nset because the monitor interface is in the cooked state and it takes\nprecedence over all other states. When the interface is then being deleted\nthe kernel calls WARN_ONCE() from check_sdata_in_driver() because of missing\nthat bit.\n\nFix this by rejecting MONITOR_FLAG_COOK_FRAMES if it is set along with\nother flags.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: nl80211: rechaza el modo cocinado si se configura junto con otras banderas. Es posible configurar simult\u00e1neamente las banderas MONITOR_FLAG_COOK_FRAMES y MONITOR_FLAG_ACTIVE en la misma interfaz de monitor desde el espacio de usuario. Esto provoca que se cree una subinterfaz sin el bit IEEE80211_SDATA_IN_DRIVER configurado, ya que la interfaz de monitor est\u00e1 en estado cocinado y tiene prioridad sobre todos los dem\u00e1s estados. Al eliminar la interfaz, el kernel llama a WARN_ONCE() desde check_sdata_in_driver() debido a la falta de ese bit. Solucione esto rechazando MONITOR_FLAG_COOK_FRAMES si se configura junto con otras banderas. Encontrado por el Centro de Verificaci\u00f3n de Linux (linuxtesting.org) con Syzkaller."}], "id": "CVE-2025-21909", "lastModified": "2025-11-03T20:17:26.380", "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": "2025-04-01T16:15:21.430", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/236f41ca728f23210b31ed2d1d8a6df575a4b2d6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/351eb7ac53ff1cd94d893c0c4534ced2f36ae7d7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/49f27f29446a5bfe633dd2cc0cfebd48a1a5e77f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/521e55c2b0d6028861ac0a2d06aa57bb0e3ac486"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5ea856d93794c4afa5542defd8c61f2708dc245a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ac4860141300581d3e2f6c6dafa37220f7ea9f65"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cd1bdcb77fdc03c253137e55bae10551b3481461"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ebebbb0eded2ed9a1abfa31962f6fb699e6abce7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: wifi: nl80211: reject cooked mode if it is set along with other flags", "id": "2356644", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2356644"}, "csaw": false, "cvss3": {"cvss3_base_score": "2.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-362", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nwifi: nl80211: reject cooked mode if it is set along with other flags\nIt is possible to set both MONITOR_FLAG_COOK_FRAMES and MONITOR_FLAG_ACTIVE\nflags simultaneously on the same monitor interface from the userspace. This\ncauses a sub-interface to be created with no IEEE80211_SDATA_IN_DRIVER bit\nset because the monitor interface is in the cooked state and it takes\nprecedence over all other states. When the interface is then being deleted\nthe kernel calls WARN_ONCE() from check_sdata_in_driver() because of missing\nthat bit.\nFix this by rejecting MONITOR_FLAG_COOK_FRAMES if it is set along with\nother flags.\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."], "name": "CVE-2025-21909", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-04-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-21909\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-21909\nhttps://lore.kernel.org/linux-cve-announce/2025040129-CVE-2025-21909-90df@gregkh/T"], "threat_severity": "Low"}

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