wifi: cfg80211: ibss: ref BSS entry for joined event

{
  "id": "a8d7e99e7296f07d3426e1aa61b440de4b1e4523335c7e75ff97265c7f1d98b1",
  "url": "https://osv.dev/vulnerability/CVE-2026-98338",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wifi: cfg80211: ibss: ref BSS entry for joined event",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: ibss: ref BSS entry for joined event When the IBSS is joined, we only record the BSSID/channel in the event and look up the BSS entry when processing it. However, that's racy, e.g. a new scan with NL80211_SCAN_FLAG_FLUSH can remove it, causing a warning in the event work: !bss WARNING: net/wireless/ibss.c:37 at __cfg80211_ibss_joined+0x3d3/0x440 Workqueue: cfg80211 cfg80211_event_work cfg80211_process_wdev_events+0x39f/0x5b0 net/wireless/util.c:1144 cfg80211_process_rdev_events+0xa1/0x110 net/wireless/util.c:1179 cfg80211_event_work+0x2f/0x40 net/wireless/core.c:393 Do the lookup early (the driver is expected to only join an IBSS that has a BSS entry) and keep a reference to it.",
    "evidence": "osv:CVE-2026-98338",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.2.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-98338",
      "aliases": [
        "CVE-2026-98338"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "667503ddcb96f3b10211f997fe55907fa7509841"
                },
                {
                  "fixed": "b0e3f019e461ac42e45aa3ec1216cefaca2f4a8b"
                },
                {
                  "fixed": "708f9d43d6a2eb9c6b83fe62af628de9dffd9314"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98338.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "2.6.32"
                },
                {
                  "fixed": "7.2.8"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98338.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.959695337Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/708f9d43d6a2eb9c6b83fe62af628de9dffd9314",
        "https://git.kernel.org/stable/c/b0e3f019e461ac42e45aa3ec1216cefaca2f4a8b",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98338.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-98338",
        "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-2026-98338.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-98338",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 518540,
  "published_at": "2026-10-06T08:46:29.213+00:00"
}