{
  "cveId": "CVE-2026-98278",
  "url": "https://patchblox.com/security/cve/CVE-2026-98278",
  "summary": "CVE-2026-98278 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98278 (version 7.2.8-1), released October 6, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  net: remove WARN_ON_ONCE() from the dev_fill_for...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  net: remove WARN_ON_ONCE() from the dev_fill_forward_path() loop check  ipip_fill_forward_path() and ip6_tnl_fill_forward_path() look up the route to the tunnel\u0027s remote endpoint and set ctx-\u003Edev to its device, which is the tunnel itself when that route resolves back to the tunnel. dev_fill_forward_path() then makes no progress and trips WARN_ON_ONCE(last_dev == ctx-\u003Edev) as soon as a flowtable tries to offload a flow through the tunnel. That routing loop is a configuration any CAP_NET_ADMIN user can set up, and ip_tunnel_xmit() and ip6_tnl_xmit() already treat it as a tx error, so remove the warning and just fail the walk, as commit 008e7a7c293b (\u0022net: remove WARN_ON_ONCE when accessing forward path array\u0022) did for the path stack overflow.",
  "published": "2026-10-06T09:18:17Z",
  "severity": "",
  "epss": 0.00172,
  "epssPercentile": 0.06589,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.8-1",
      "fix": "DEBIAN-CVE-2026-98278",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98278",
      "released": "2026-10-06T21:56:27Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}