wifi: mac80211: require a peer station for TDLS setup confirm

{
  "id": "31f3d78dfde841b4c7d0fa0902cf5bf6144c5ad705781a17a47a8715c2101807",
  "url": "https://osv.dev/vulnerability/CVE-2026-98421",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wifi: mac80211: require a peer station for TDLS setup confirm",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: require a peer station for TDLS setup confirm It's nonsense for the setup confirm to go to station that doesn't even exist, and it hits a warning when building the frame: WARN_ON_ONCE(!sta || !ap_sta) Only accept WLAN_TDLS_SETUP_CONFIRM when the station is already there as a TDLS station. Need to copy the call to ieee80211_tdls_prep_mgmt_packet() since the existing WLAN_TDLS_DISCOVERY_REQUEST already falls through to it.",
    "evidence": "osv:CVE-2026-98421",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.189",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.158",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.112",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.54",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-98421",
      "aliases": [
        "CVE-2026-98421"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "6f7eaa47e1de30159277f91f1145a6687f13ffd9"
                },
                {
                  "fixed": "6bae6ef511a29ef12ab969adeea691067d4d5d74"
                },
                {
                  "fixed": "d0afa5395c46d73ad2090aa50209886e84f179bd"
                },
                {
                  "fixed": "742c762bee59c973684f70dfed7de4945d3141e2"
                },
                {
                  "fixed": "fce36d242a18ddf64731d816a37564103172da11"
                },
                {
                  "fixed": "1c0a5c96473b9e7a5f4c453ef6a13dc0f5589a4b"
                },
                {
                  "fixed": "038e1d126304fd25d507fd4e671232df57bd1799"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98421.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "3.17.0"
                },
                {
                  "fixed": "6.1.189"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.158"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.112"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.54"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.8"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98421.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.720162693Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/038e1d126304fd25d507fd4e671232df57bd1799",
        "https://git.kernel.org/stable/c/1c0a5c96473b9e7a5f4c453ef6a13dc0f5589a4b",
        "https://git.kernel.org/stable/c/6bae6ef511a29ef12ab969adeea691067d4d5d74",
        "https://git.kernel.org/stable/c/742c762bee59c973684f70dfed7de4945d3141e2",
        "https://git.kernel.org/stable/c/d0afa5395c46d73ad2090aa50209886e84f179bd",
        "https://git.kernel.org/stable/c/fce36d242a18ddf64731d816a37564103172da11",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98421.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-98421",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98421.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-98421",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 497803,
  "published_at": "2026-10-14T13:27:50.2+00:00"
}