{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.0.12-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  wifi: mac80211: bounds-check link_id in ieee80211_ml_epcs  IEEE80211_MLE_STA_EPCS_CONTROL_LINK_ID is 0x000f, so link_id extracted from a PRIO_ACCESS ML element PER_STA_PROFILE subelement can be 0..15. sdata-\u003elink[] has IEEE80211_MLD_MAX_NUM_LINKS (15) entries (indices 0..14), making index 15 out-of-bounds.  A connected WiFi 7 AP can trigger this by sending an EPCS Enable Response action frame with a PER_STA_PROFILE subelement where link_id = 15.  The unsolicited-notification path (dialog_token = 0) is reachable any time EPCS is already enabled, without any prior client request.  sdata-\u003elink[15] reads into the first word of sdata-\u003eactivate_links_work (a wiphy_work whose embedded list_head is non-NULL after INIT_LIST_HEAD), so the NULL check on the result does not catch the invalid access.  The garbage pointer is then passed to ieee80211_sta_wmm_params(), which dereferences link-\u003esdata and crashes the kernel.  The same class of bug was fixed for ieee80211_ml_reconfiguration() by commit 162d331d833d (\"wifi: mac80211: bounds-check link_id in ieee80211_ml_reconfiguration\").",
  "id": "DEBIAN-CVE-2026-64030",
  "modified": "2026-09-14T16:47:34.573555137Z",
  "published": "2026-07-19T16:17:43.147Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-64030"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-64030"
  ]
}