CVE-2025-38509

{"id": "CVE-2025-38509", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2025-08-16T11:15:43.893", "references": [{"url": "https://git.kernel.org/stable/c/18eca59a04500b68a90e0c5c873f97c9d1ea2bfa", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/58fcb1b4287ce38850402bb2bb16d09bf77b91d9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: reject VHT opmode for unsupported channel widths\n\nVHT operating mode notifications are not defined for channel widths\nbelow 20 MHz. In particular, 5 MHz and 10 MHz are not valid under the\nVHT specification and must be rejected.\n\nWithout this check, malformed notifications using these widths may\nreach ieee80211_chan_width_to_rx_bw(), leading to a WARN_ON due to\ninvalid input. This issue was reported by syzbot.\n\nReject these unsupported widths early in sta_link_apply_parameters()\nwhen opmode_notif is used. The accepted set includes 20, 40, 80, 160,\nand 80+80 MHz, which are valid for VHT. While 320 MHz is not defined\nfor VHT, it is allowed to avoid rejecting HE or EHT clients that may\nstill send a VHT opmode notification."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: mac80211: rechazar el modo de operaci\u00f3n VHT para anchos de canal no compatibles. Las notificaciones del modo de operaci\u00f3n VHT no est\u00e1n definidas para anchos de canal inferiores a 20 MHz. En particular, 5 MHz y 10 MHz no son v\u00e1lidos seg\u00fan la especificaci\u00f3n VHT y deben rechazarse. Sin esta comprobaci\u00f3n, las notificaciones malformadas que utilicen estos anchos pueden alcanzar ieee80211_chan_width_to_rx_bw(), lo que genera un WARN_ON debido a una entrada no v\u00e1lida. Este problema fue reportado por syzbot. Rechace estos anchos no compatibles al principio de sta_link_apply_parameters() cuando se utilice opmode_notif. El conjunto aceptado incluye 20, 40, 80, 160 y 80+80 MHz, que son v\u00e1lidos para VHT. Si bien 320 MHz no est\u00e1 definido para VHT, se permite evitar rechazar clientes HE o EHT que a\u00fan puedan enviar una notificaci\u00f3n de modo de operaci\u00f3n VHT."}], "lastModified": "2025-11-19T17:22:32.987", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F9C46937-5FA9-4335-AD7B-E7FC29453CE1", "versionEndExcluding": "6.15.7", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6D4894DB-CCFE-4602-B1BF-3960B2E19A01"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "09709862-E348-4378-8632-5A7813EDDC86"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "415BF58A-8197-43F5-B3D7-D1D63057A26E"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A0517869-312D-4429-80C2-561086E1421C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "85421F4E-C863-4ABF-B4B4-E887CC2F7F92"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}