{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/meta/fbnic/fbnic_pci.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c5b5aee41b9f5ed0743344be1c7b544555fa3cb9",
              "status": "affected",
              "version": "bc6107771bb4be3009168cfda24d22131c026fe8",
              "versionType": "git"
            },
            {
              "lessThan": "4f4b767ffea7653a00904383908536e754f8ef5b",
              "status": "affected",
              "version": "bc6107771bb4be3009168cfda24d22131c026fe8",
              "versionType": "git"
            },
            {
              "lessThan": "4bcc4a92c603fe7f062cea22e20da2e0ad6b12c3",
              "status": "affected",
              "version": "bc6107771bb4be3009168cfda24d22131c026fe8",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/meta/fbnic/fbnic_pci.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "lessThan": "6.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.55",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.9",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\neth: fbnic: reset num_napi when the napi vectors are freed\n\nfbn-\u003enum_napi is the count of live napi vectors, each of which owns an\nIRQ.  The PM path had freed them without clearing the count.\nfbnic_pm_suspend() tears the datapath down via ndo_stop() and frees the\nIRQs, but leaves netif_running() true so resume knows to re-open.  Resume\nrebuilds the datapath in __fbnic_pm_resume() and fbnic_reset_queues() sets\nnum_napi and __fbnic_open() re-allocates the vectors.\n\nWhen the datapath is torn down but never rebuilt, num_napi is left\npointing at freed vectors under 2 different scenarios:\n - a PCIe error recovery that fails (fbnic_err_slot_reset() -\u003e\n   __fbnic_pm_resume() returns an error -\u003e PCI_ERS_RESULT_DISCONNECT), so\n   .resume never runs; or\n - an __fbnic_open() that fails partway on resume and unwinds, freeing\n   the vectors after fbnic_reset_queues() has already set num_napi.\n\nThe netdev is then running with num_napi \u003e 0 but napi[] freed, and the\neventual remove/unbind close re-enters fbnic_down() -\u003e fbnic_dbg_down()\nand dereferences the freed vectors:\n  BUG: kernel NULL pointer dereference, address: 0000000000000210\n  RIP: fbnic_dbg_down+0x28\n\nClear num_napi when the vectors are freed: in the suspend teardown (a\ngood resume re-establishes it before __fbnic_open()) and on the resume\nopen failure.  A redundant ndo_stop() then walks an empty napi[].  The\nnormal ndo_stop() down/up cycle is untouched and keeps num_napi for the\nnext ndo_open()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:22:44.159Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c5b5aee41b9f5ed0743344be1c7b544555fa3cb9"
        },
        {
          "url": "https://git.kernel.org/stable/c/4f4b767ffea7653a00904383908536e754f8ef5b"
        },
        {
          "url": "https://git.kernel.org/stable/c/4bcc4a92c603fe7f062cea22e20da2e0ad6b12c3"
        }
      ],
      "title": "eth: fbnic: reset num_napi when the napi vectors are freed",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98616",
    "datePublished": "2026-10-18T15:19:36.165Z",
    "dateReserved": "2026-09-25T10:25:14.360Z",
    "dateUpdated": "2026-10-19T09:22:44.159Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}