CVE-2026-23258 (GCVE-0-2026-23258)
Vulnerability from cvelistv5
Published
2026-03-18 17:41
Modified
2026-03-18 17:41
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: liquidio: Initialize netdev pointer before queue setup In setup_nic_devices(), the netdev is allocated using alloc_etherdev_mq(). However, the pointer to this structure is stored in oct->props[i].netdev only after the calls to netif_set_real_num_rx_queues() and netif_set_real_num_tx_queues(). If either of these functions fails, setup_nic_devices() returns an error without freeing the allocated netdev. Since oct->props[i].netdev is still NULL at this point, the cleanup function liquidio_destroy_nic_device() will fail to find and free the netdev, resulting in a memory leak. Fix this by initializing oct->props[i].netdev before calling the queue setup functions. This ensures that the netdev is properly accessible for cleanup in case of errors. Compile tested only. Issue found using a prototype static analysis tool and code review.
References
Impacted products
Vendor Product Version
Linux Linux Version: c33c997346c34ea7b89aec99524ad9632a2f1e0c
Version: c33c997346c34ea7b89aec99524ad9632a2f1e0c
Version: c33c997346c34ea7b89aec99524ad9632a2f1e0c
Version: c33c997346c34ea7b89aec99524ad9632a2f1e0c
Version: c33c997346c34ea7b89aec99524ad9632a2f1e0c
Version: c33c997346c34ea7b89aec99524ad9632a2f1e0c
Version: c33c997346c34ea7b89aec99524ad9632a2f1e0c
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{
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          "programFiles": [
            "drivers/net/ethernet/cavium/liquidio/lio_main.c"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: liquidio: Initialize netdev pointer before queue setup\n\nIn setup_nic_devices(), the netdev is allocated using alloc_etherdev_mq().\nHowever, the pointer to this structure is stored in oct-\u003eprops[i].netdev\nonly after the calls to netif_set_real_num_rx_queues() and\nnetif_set_real_num_tx_queues().\n\nIf either of these functions fails, setup_nic_devices() returns an error\nwithout freeing the allocated netdev. Since oct-\u003eprops[i].netdev is still\nNULL at this point, the cleanup function liquidio_destroy_nic_device()\nwill fail to find and free the netdev, resulting in a memory leak.\n\nFix this by initializing oct-\u003eprops[i].netdev before calling the queue\nsetup functions. This ensures that the netdev is properly accessible for\ncleanup in case of errors.\n\nCompile tested only. Issue found using a prototype static analysis tool\nand code review."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-18T17:41:05.080Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/c81a8515fb8c8fb5d0dbc21f48337494bf1d60df"
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          "url": "https://git.kernel.org/stable/c/d028147ae06407cb355245db1774793600670169"
        },
        {
          "url": "https://git.kernel.org/stable/c/926ede0c85e1e57c97d64d9612455267d597bb2c"
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      "title": "net: liquidio: Initialize netdev pointer before queue setup",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23258",
    "datePublished": "2026-03-18T17:41:05.080Z",
    "dateReserved": "2026-01-13T15:37:45.990Z",
    "dateUpdated": "2026-03-18T17:41:05.080Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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