{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/cfg.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "18eca59a04500b68a90e0c5c873f97c9d1ea2bfa",
              "status": "affected",
              "version": "751e7489c1d74b94ffffbed619d8fd724eeff4ee",
              "versionType": "git"
            },
            {
              "lessThan": "58fcb1b4287ce38850402bb2bb16d09bf77b91d9",
              "status": "affected",
              "version": "751e7489c1d74b94ffffbed619d8fd724eeff4ee",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/cfg.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.7",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-08-16T10:54:46.493Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/18eca59a04500b68a90e0c5c873f97c9d1ea2bfa"
        },
        {
          "url": "https://git.kernel.org/stable/c/58fcb1b4287ce38850402bb2bb16d09bf77b91d9"
        }
      ],
      "title": "wifi: mac80211: reject VHT opmode for unsupported channel widths",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38509",
    "datePublished": "2025-08-16T10:54:46.493Z",
    "dateReserved": "2025-04-16T04:51:24.022Z",
    "dateUpdated": "2025-08-16T10:54:46.493Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38509\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-08-16T11:15:43.893\",\"lastModified\":\"2025-08-18T20:16:28.750\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"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.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/18eca59a04500b68a90e0c5c873f97c9d1ea2bfa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/58fcb1b4287ce38850402bb2bb16d09bf77b91d9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}