wifi: mac80211: mesh: release the channel if start fails

{
  "id": "4f6b46c64a9af0205d49f01419a0285de04b2a2b1f4d5f1903ce0736c1782fd5",
  "url": "https://osv.dev/vulnerability/CVE-2026-98326",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wifi: mac80211: mesh: release the channel if start fails",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: mesh: release the channel if start fails ieee80211_join_mesh() acquires a channel context and then calls ieee80211_start_mesh(), which can fail. In that case, the chanctx isn't released then interface removal will attempt to unassign it after it's removed from the driver, hitting: wlan0: Failed check-sdata-in-driver check, flags: 0x0 WARNING: net/mac80211/driver-ops.c:366 at drv_unassign_vif_chanctx ieee80211_assign_link_chanctx __ieee80211_link_release_channel ieee80211_link_release_channel ieee80211_teardown_sdata unregister_netdevice_many_notify _cfg80211_unregister_wdev ieee80211_remove_interfaces ieee80211_unregister_hw mac80211_hwsim_del_radio hwsim_exit_net Correctly release the channel on start failures.",
    "evidence": "osv:CVE-2026-98326",
    "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-2026-98326",
      "aliases": [
        "CVE-2026-98326"
      ],
      "affected": [
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
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                  "fixed": "b51f5a310bd6888b90bb9546a8081215dcfe6fbe"
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                {
                  "fixed": "632f7acfe6dac1278a9314eaaab14fada400ddaf"
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                {
                  "fixed": "41bee71112db53651ba9a9030de1b843255a4a7f"
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                {
                  "fixed": "4a4e3fa77ea36d3419d806fb5883ef425a605a5d"
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                {
                  "fixed": "ae97fff6495a8764bc0ef281cfe5444f701e527f"
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98326.json"
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        {
          "ranges": [
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              "type": "ECOSYSTEM",
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                  "introduced": "3.9.0"
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98326.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:43.676217537Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/41bee71112db53651ba9a9030de1b843255a4a7f",
        "https://git.kernel.org/stable/c/4a4e3fa77ea36d3419d806fb5883ef425a605a5d",
        "https://git.kernel.org/stable/c/632f7acfe6dac1278a9314eaaab14fada400ddaf",
        "https://git.kernel.org/stable/c/ae97fff6495a8764bc0ef281cfe5444f701e527f",
        "https://git.kernel.org/stable/c/b51f5a310bd6888b90bb9546a8081215dcfe6fbe",
        "https://git.kernel.org/stable/c/f0afcec2129c166e61821d6ae097061155f01b12",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98326.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-98326",
        "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-2026-98326.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-98326",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 511579,
  "published_at": "2026-10-06T08:46:19.534+00:00"
}