CVE-2026-98326 (GCVE-0-2026-98326)
Vulnerability from cvelistv5
Published
2026-10-06 08:46
Modified
2026-10-19 09:17
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 2b5e19677592c167d012c2d129407f39d2bdeb8d
Version: 2b5e19677592c167d012c2d129407f39d2bdeb8d
Version: 2b5e19677592c167d012c2d129407f39d2bdeb8d
Version: 2b5e19677592c167d012c2d129407f39d2bdeb8d
Version: 2b5e19677592c167d012c2d129407f39d2bdeb8d
Version: 2b5e19677592c167d012c2d129407f39d2bdeb8d
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{
  "containers": {
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          "programFiles": [
            "net/mac80211/cfg.c"
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              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: mesh: release the channel if start fails\n\nieee80211_join_mesh() acquires a channel context and then calls\nieee80211_start_mesh(), which can fail. In that case, the chanctx\nisn\u0027t released then interface removal will attempt to unassign it\nafter it\u0027s removed from the driver, hitting:\n\n  wlan0: Failed check-sdata-in-driver check, flags: 0x0\n  WARNING: net/mac80211/driver-ops.c:366 at drv_unassign_vif_chanctx\n   ieee80211_assign_link_chanctx\n   __ieee80211_link_release_channel\n   ieee80211_link_release_channel\n   ieee80211_teardown_sdata\n   unregister_netdevice_many_notify\n   _cfg80211_unregister_wdev\n   ieee80211_remove_interfaces\n   ieee80211_unregister_hw\n   mac80211_hwsim_del_radio\n   hwsim_exit_net\n\nCorrectly release the channel on start failures."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:17:36.726Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f0afcec2129c166e61821d6ae097061155f01b12"
        },
        {
          "url": "https://git.kernel.org/stable/c/b51f5a310bd6888b90bb9546a8081215dcfe6fbe"
        },
        {
          "url": "https://git.kernel.org/stable/c/632f7acfe6dac1278a9314eaaab14fada400ddaf"
        },
        {
          "url": "https://git.kernel.org/stable/c/41bee71112db53651ba9a9030de1b843255a4a7f"
        },
        {
          "url": "https://git.kernel.org/stable/c/4a4e3fa77ea36d3419d806fb5883ef425a605a5d"
        },
        {
          "url": "https://git.kernel.org/stable/c/ae97fff6495a8764bc0ef281cfe5444f701e527f"
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      ],
      "title": "wifi: mac80211: mesh: release the channel if start fails",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98326",
    "datePublished": "2026-10-06T08:46:19.534Z",
    "dateReserved": "2026-09-25T10:25:14.340Z",
    "dateUpdated": "2026-10-19T09:17:36.726Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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