CVE-2026-97411 (GCVE-0-2026-97411)
Vulnerability from cvelistv5
Published
2026-09-24 16:03
Modified
2026-10-03 10:58
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ibm: emac: mal: fix potential system hang in mal_remove() napi_disable() is not idempotent and calling it on an already-disabled or unenabled NAPI context will cause the kernel to spin indefinitely waiting for the NAPI_STATE_SCHED bit to clear. In mal_remove(), napi_disable() is called unconditionally. If no MACs were registered, NAPI was never enabled. Also, if they were registered but subsequently unregistered, NAPI was already disabled in mal_unregister_commac(). In either case, calling napi_disable() causes the kernel to hang upon module removal. Fix this by only calling napi_disable() in mal_remove() if the commac list is not empty (which implies NAPI is enabled).
References
Impacted products
Vendor Product Version
Linux Linux Version: b3e441c6ed8655a42e7b4da1b6dc7939f259d9c9
Version: b3e441c6ed8655a42e7b4da1b6dc7939f259d9c9
Version: b3e441c6ed8655a42e7b4da1b6dc7939f259d9c9
Version: b3e441c6ed8655a42e7b4da1b6dc7939f259d9c9
Version: b3e441c6ed8655a42e7b4da1b6dc7939f259d9c9
Version: b3e441c6ed8655a42e7b4da1b6dc7939f259d9c9
Version: b3e441c6ed8655a42e7b4da1b6dc7939f259d9c9
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{
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ibm: emac: mal: fix potential system hang in mal_remove()\n\nnapi_disable() is not idempotent and calling it on an already-disabled\nor unenabled NAPI context will cause the kernel to spin indefinitely\nwaiting for the NAPI_STATE_SCHED bit to clear.\n\nIn mal_remove(), napi_disable() is called unconditionally. If no MACs were\nregistered, NAPI was never enabled. Also, if they were registered but\nsubsequently unregistered, NAPI was already disabled in\nmal_unregister_commac(). In either case, calling napi_disable() causes\nthe kernel to hang upon module removal.\n\nFix this by only calling napi_disable() in mal_remove() if the commac list\nis not empty (which implies NAPI is enabled)."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-03T10:58:04.560Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/9c1c814a662d9c81959eba591bb52b24639390f2"
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        {
          "url": "https://git.kernel.org/stable/c/34c4cae51718d6f393415e01c61314c1bde02f2e"
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        {
          "url": "https://git.kernel.org/stable/c/62126e73e230cf4bd6c27cf201949c4290af84a1"
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          "url": "https://git.kernel.org/stable/c/c4cb9a728df66c46067b26263f5beb633aae4087"
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        {
          "url": "https://git.kernel.org/stable/c/7c5d41f87f079990bf241359e3c1332d8d10fe87"
        }
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97411",
    "datePublished": "2026-09-24T16:03:17.967Z",
    "dateReserved": "2026-09-24T14:53:16.867Z",
    "dateUpdated": "2026-10-03T10:58:04.560Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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