CVE-2026-23258 (GCVE-0-2026-23258)

Vulnerability from cvelistv5 – Published: 2026-03-18 17:41 – Updated: 2026-03-18 17:41
VLAI?
Title
net: liquidio: Initialize netdev pointer before queue setup
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: c33c997346c34ea7b89aec99524ad9632a2f1e0c , < be109646cdaecab262f6276303b1763468c94378 (git)
Affected: c33c997346c34ea7b89aec99524ad9632a2f1e0c , < c81a8515fb8c8fb5d0dbc21f48337494bf1d60df (git)
Affected: c33c997346c34ea7b89aec99524ad9632a2f1e0c , < a0e57c0b68c9e6f9a8fd7c1167861a5a730eb2f4 (git)
Affected: c33c997346c34ea7b89aec99524ad9632a2f1e0c , < c0ed6c77ec34050971fd0df2a94dfdea66d09331 (git)
Affected: c33c997346c34ea7b89aec99524ad9632a2f1e0c , < 1d4590fde856cb94bd9a46e795c29d8288c238fc (git)
Affected: c33c997346c34ea7b89aec99524ad9632a2f1e0c , < d028147ae06407cb355245db1774793600670169 (git)
Affected: c33c997346c34ea7b89aec99524ad9632a2f1e0c , < 926ede0c85e1e57c97d64d9612455267d597bb2c (git)
Create a notification for this product.
    Linux Linux Affected: 4.18
Unaffected: 0 , < 4.18 (semver)
Unaffected: 5.10.250 , ≤ 5.10.* (semver)
Unaffected: 5.15.200 , ≤ 5.15.* (semver)
Unaffected: 6.1.163 , ≤ 6.1.* (semver)
Unaffected: 6.6.124 , ≤ 6.6.* (semver)
Unaffected: 6.12.70 , ≤ 6.12.* (semver)
Unaffected: 6.18.10 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/cavium/liquidio/lio_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "be109646cdaecab262f6276303b1763468c94378",
              "status": "affected",
              "version": "c33c997346c34ea7b89aec99524ad9632a2f1e0c",
              "versionType": "git"
            },
            {
              "lessThan": "c81a8515fb8c8fb5d0dbc21f48337494bf1d60df",
              "status": "affected",
              "version": "c33c997346c34ea7b89aec99524ad9632a2f1e0c",
              "versionType": "git"
            },
            {
              "lessThan": "a0e57c0b68c9e6f9a8fd7c1167861a5a730eb2f4",
              "status": "affected",
              "version": "c33c997346c34ea7b89aec99524ad9632a2f1e0c",
              "versionType": "git"
            },
            {
              "lessThan": "c0ed6c77ec34050971fd0df2a94dfdea66d09331",
              "status": "affected",
              "version": "c33c997346c34ea7b89aec99524ad9632a2f1e0c",
              "versionType": "git"
            },
            {
              "lessThan": "1d4590fde856cb94bd9a46e795c29d8288c238fc",
              "status": "affected",
              "version": "c33c997346c34ea7b89aec99524ad9632a2f1e0c",
              "versionType": "git"
            },
            {
              "lessThan": "d028147ae06407cb355245db1774793600670169",
              "status": "affected",
              "version": "c33c997346c34ea7b89aec99524ad9632a2f1e0c",
              "versionType": "git"
            },
            {
              "lessThan": "926ede0c85e1e57c97d64d9612455267d597bb2c",
              "status": "affected",
              "version": "c33c997346c34ea7b89aec99524ad9632a2f1e0c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/cavium/liquidio/lio_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.18"
            },
            {
              "lessThan": "4.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.250",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.200",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.163",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.124",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.70",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.250",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.200",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.163",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.124",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.70",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.10",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/be109646cdaecab262f6276303b1763468c94378"
        },
        {
          "url": "https://git.kernel.org/stable/c/c81a8515fb8c8fb5d0dbc21f48337494bf1d60df"
        },
        {
          "url": "https://git.kernel.org/stable/c/a0e57c0b68c9e6f9a8fd7c1167861a5a730eb2f4"
        },
        {
          "url": "https://git.kernel.org/stable/c/c0ed6c77ec34050971fd0df2a94dfdea66d09331"
        },
        {
          "url": "https://git.kernel.org/stable/c/1d4590fde856cb94bd9a46e795c29d8288c238fc"
        },
        {
          "url": "https://git.kernel.org/stable/c/d028147ae06407cb355245db1774793600670169"
        },
        {
          "url": "https://git.kernel.org/stable/c/926ede0c85e1e57c97d64d9612455267d597bb2c"
        }
      ],
      "title": "net: liquidio: Initialize netdev pointer before queue setup",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "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",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23258\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-03-18T18:16:24.167\",\"lastModified\":\"2026-03-19T13:25:00.570\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"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.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1d4590fde856cb94bd9a46e795c29d8288c238fc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/926ede0c85e1e57c97d64d9612455267d597bb2c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a0e57c0b68c9e6f9a8fd7c1167861a5a730eb2f4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/be109646cdaecab262f6276303b1763468c94378\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c0ed6c77ec34050971fd0df2a94dfdea66d09331\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c81a8515fb8c8fb5d0dbc21f48337494bf1d60df\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d028147ae06407cb355245db1774793600670169\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.