{
  "cveId": "CVE-2026-72407",
  "url": "https://patchblox.com/security/cve/CVE-2026-72407",
  "summary": "CVE-2026-72407 is fixed in linux on 1 platform by DEBIAN-CVE-2026-72407 (version 7.1.5-1), released August 15, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  geneve: validate inner network offset in geneve_...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  geneve: validate inner network offset in geneve_gro_complete()  Even with both paths gated on gs-\u003Egro_hint, geneve_gro_complete() re-derives the inner dispatch type and length from the packet and the current gs-\u003Egro_hint, independently of geneve_gro_receive(). The two can disagree if gs-\u003Egro_hint flips under a concurrent geneve_quiesce()/ geneve_unquiesce() (sk_user_data is NULL across a synchronize_net()), or if the re-read option bytes differ from the ones receive parsed.  geneve_gro_receive() already records the inner network header position in NAPI_GRO_CB()-\u003Einner_network_offset. Have geneve_gro_complete() compute the offset it is about to dispatch at, adding ETH_HLEN in the ETH_P_TEB case where eth_gro_complete() steps over the inner MAC header, and bail out if it lands past inner_network_offset.  Use a lower bound rather than exact equality: between gh_len and the inner L3 header, geneve_gro_receive() may also have pulled an inner VLAN tag (vlan_gro_receive() advances the recorded offset past it), which only moves inner_network_offset further out. A valid frame therefore always satisfies inner_nh \u003C= inner_network_offset, while a gh_len inflated by a hint gro_receive() did not honour dispatches past the validated inner header, i.e. the out-of-bounds completion. Only the latter is rejected.",
  "published": "2026-08-15T06:22:14Z",
  "severity": "critical",
  "cvss": 10,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
  "epss": 0.00553,
  "epssPercentile": 0.4646,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.5-1",
      "fix": "DEBIAN-CVE-2026-72407",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-72407",
      "released": "2026-08-15T22:38:55Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}