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CVE-2026-80715

Estado: RecibidaSin puntuar—

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.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-80715",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "fc9df2a0b520d7d439ecf464794d53e91be74b93",
              "lessThan": "ad6e0df267dc96edb7de1fa0a2fb2a70645bff86",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fc9df2a0b520d7d439ecf464794d53e91be74b93",
              "lessThan": "605585a8d89aaeb0122e9016fdaa92376897a705",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fc9df2a0b520d7d439ecf464794d53e91be74b93",
              "lessThan": "a0f16c337691813f8d8f014c01fff5a368e08898",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fc9df2a0b520d7d439ecf464794d53e91be74b93",
              "lessThan": "f929a6fe5b7ae1e72d2c6d18cd69ab90dcf689d2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fc9df2a0b520d7d439ecf464794d53e91be74b93",
              "lessThan": "3b5aee6fcbf6b58112d40d19c8d31fa3f78ee668",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fc9df2a0b520d7d439ecf464794d53e91be74b93",
              "lessThan": "9a2b637aef4e515c2179774888441d00e8a5ae95",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fc9df2a0b520d7d439ecf464794d53e91be74b93",
              "lessThan": "5ffab5b9589c50e4cfc0cf36ffd76c89422d4019",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/intel/igc/igc_main.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.14"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.14",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.217",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.184",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.153",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.105",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.44",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.8",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/intel/igc/igc_main.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-28T08:16:57.173",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/3b5aee6fcbf6b58112d40d19c8d31fa3f78ee668",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5ffab5b9589c50e4cfc0cf36ffd76c89422d4019",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/605585a8d89aaeb0122e9016fdaa92376897a705",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9a2b637aef4e515c2179774888441d00e8a5ae95",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a0f16c337691813f8d8f014c01fff5a368e08898",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ad6e0df267dc96edb7de1fa0a2fb2a70645bff86",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f929a6fe5b7ae1e72d2c6d18cd69ab90dcf689d2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nigc: remove napi_synchronize() in igc_down()\n\nWhen an AF_XDP zero-copy application is killed abruptly, the XSK pool is\ntorn down but NAPI keeps polling. igc_clean_rx_irq_zc() then returns the\nfull budget on every poll, so napi_complete_done() never clears\nNAPI_STATE_SCHED.\n\nigc_down() calls napi_synchronize() before napi_disable(), so it spins\nforever waiting for that bit and the interface never goes down. Drop the\nnapi_synchronize() and let napi_disable() do the job -- it sets\nNAPI_STATE_DISABLE, which forces the stuck poll to complete. Reorder it\nahead of igc_set_queue_napi() so the NAPI mapping is cleared only after\npolling has stopped, matching the recent igb fix b1e067240379."
    }
  ],
  "lastModified": "2026-08-28T08:16:57.173",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}