{
  "cveId": "CVE-2026-74325",
  "url": "https://patchblox.com/security/cve/CVE-2026-74325",
  "summary": "CVE-2026-74325 is fixed in linux on 1 platform by DEBIAN-CVE-2026-74325 (version 7.1.5-1), released August 15, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  wifi: mt76: use kfree_rcu for offchannel link in...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  wifi: mt76: use kfree_rcu for offchannel link in mt76_put_vif_phy_link  mt76_put_vif_phy_link() frees the offchannel mlink with plain kfree() after rcu_assign_pointer(NULL). However, rcu_assign_pointer only prevents future RCU readers from obtaining the pointer -- it does not wait for existing readers that already hold it via rcu_dereference.  The TX datapath (e.g. mt7996_mac_write_txwi) dereferences mlink-\u003Ewcid and mlink-\u003Eidx under rcu_read_lock. If a TX softirq obtained the pointer via rcu_dereference just before the NULL assignment, it will dereference freed memory after the kfree.  struct mt76_vif_link already contains an rcu_head field that is unused at this free site -- a developer oversight, since the adjacent kfree_rcu_mightsleep call for rx_sc in the same function shows the pattern was understood.  Replace kfree(mlink) with kfree_rcu(mlink, rcu_head).",
  "published": "2026-08-15T06:22:33Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00173,
  "epssPercentile": 0.06795,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.5-1",
      "fix": "DEBIAN-CVE-2026-74325",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-74325",
      "released": "2026-08-15T22:38:55Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-10T13:56:55Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}