igc: remove napi_synchronize() in igc_down()

{
  "id": "403b70e80074466892cc970fc7fa96a94d9ab9c2b7f02489e27323ea787a14eb",
  "url": "https://osv.dev/vulnerability/CVE-2026-80715",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "igc: remove napi_synchronize() in igc_down()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: igc: remove napi_synchronize() in igc_down() When an AF_XDP zero-copy application is killed abruptly, the XSK pool is torn down but NAPI keeps polling. igc_clean_rx_irq_zc() then returns the full budget on every poll, so napi_complete_done() never clears NAPI_STATE_SCHED. igc_down() calls napi_synchronize() before napi_disable(), so it spins forever waiting for that bit and the interface never goes down. Drop the napi_synchronize() and let napi_disable() do the job -- it sets NAPI_STATE_DISABLE, which forces the stuck poll to complete. Reorder it ahead of igc_set_queue_napi() so the NAPI mapping is cleared only after polling has stopped, matching the recent igb fix b1e067240379.",
    "evidence": "osv:CVE-2026-80715",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.217",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.184",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.153",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.105",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.44",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.1.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-80715",
      "aliases": [
        "CVE-2026-80715"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "fixed": "ad6e0df267dc96edb7de1fa0a2fb2a70645bff86"
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                  "fixed": "605585a8d89aaeb0122e9016fdaa92376897a705"
                },
                {
                  "fixed": "a0f16c337691813f8d8f014c01fff5a368e08898"
                },
                {
                  "fixed": "f929a6fe5b7ae1e72d2c6d18cd69ab90dcf689d2"
                },
                {
                  "fixed": "3b5aee6fcbf6b58112d40d19c8d31fa3f78ee668"
                },
                {
                  "fixed": "9a2b637aef4e515c2179774888441d00e8a5ae95"
                },
                {
                  "fixed": "5ffab5b9589c50e4cfc0cf36ffd76c89422d4019"
                }
              ]
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80715.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "5.14.0"
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              "type": "ECOSYSTEM",
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                  "introduced": "6.7.0"
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                {
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
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            {
              "type": "ECOSYSTEM",
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80715.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.788670556Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/3b5aee6fcbf6b58112d40d19c8d31fa3f78ee668",
        "https://git.kernel.org/stable/c/5ffab5b9589c50e4cfc0cf36ffd76c89422d4019",
        "https://git.kernel.org/stable/c/605585a8d89aaeb0122e9016fdaa92376897a705",
        "https://git.kernel.org/stable/c/9a2b637aef4e515c2179774888441d00e8a5ae95",
        "https://git.kernel.org/stable/c/a0f16c337691813f8d8f014c01fff5a368e08898",
        "https://git.kernel.org/stable/c/ad6e0df267dc96edb7de1fa0a2fb2a70645bff86",
        "https://git.kernel.org/stable/c/f929a6fe5b7ae1e72d2c6d18cd69ab90dcf689d2",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80715.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-80715",
        "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/2026/80xxx/CVE-2026-80715.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-80715",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 513911,
  "published_at": "2026-08-28T06:53:13.683+00:00"
}