{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/wangxun/ngbe/ngbe_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "cef4c5b9aca24651d069adf9462b221df6a2a669",
              "status": "affected",
              "version": "4174c0c331a2aa3322d3b3be532808deb041b37d",
              "versionType": "git"
            },
            {
              "lessThan": "0ab482b2195edc000262f0eae1cdcb416b8f335d",
              "status": "affected",
              "version": "4174c0c331a2aa3322d3b3be532808deb041b37d",
              "versionType": "git"
            },
            {
              "lessThan": "5f3a13e0bb5ebcc1ca2dfda42ea40b9f3c2be6ea",
              "status": "affected",
              "version": "4174c0c331a2aa3322d3b3be532808deb041b37d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/wangxun/ngbe/ngbe_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.46",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.10",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ngbe: fix NULL pointer dereference in non-MSI-X interrupt enabling\n\nIn non-MSI-X mode (such as legacy INTx or single MSI), wx-\u003emsix_entry is\nnot allocated or initialized. Calling NGBE_INTR_MISC(wx) dereferences\nwx-\u003emsix_entry-\u003eentry, leading to a NULL pointer dereference crash.\n\nThis issue was introduced by fixing the IRQ vector when the number of\nVFs is 7. Fix the issue by explicitly checking `pdev-\u003emsix_enabled` to\ndetermine the correct vector index.\n\nAdditionally, as a side fix, set the interrupt mask to BIT(0) for the\nnon-MSI-X fallback. In MSI/INTx mode, the MISC and queue interrupts\nshare vector 0, and the WX_PX_MISC_IVAR register is only valid in the\nMSI-X case. Thus, BIT(0) is the correct mask for the miscellaneous cause\nwhen MSI-X is disabled."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The NULL dereference is in ngbe_intr(), the MSI/INTx hard-IRQ handler reached when the Wangxun ngbe NIC raises an interrupt from wire activity (RX/TX completion, link, or misc events); a remote peer sending traffic to an up interface drives this path with no local access.\nAC:L - After the 4174c0c regression every non-MSI-X interrupt that reaches ngbe_irq_enable(wx,false) deterministically dereferences NULL msix_entry; MSI/INTx fallback is automatic on MSI-X allocation failure, VMs, and pci=nomsi, and each packet reliably retriggers the fault.\nPR:N - No credentials or capabilities are needed on the target once the netdev is up; received frames are handled in hardirq before any socket, netfilter, or authentication gate, so any host that can send packets to the interface can trigger the crash.\nUI:N - Interrupt delivery and the faulty re-enable run automatically in hardirq context on normal NIC operation; no administrator or end-user action beyond the interface already being configured up at boot is required.\nS:U - The oops is confined to kernel hardirq context within the same security authority; it is not a VM escape, hypervisor bypass, IOMMU violation, or sandbox boundary crossing.\nC:N - The fault is a NULL read of wx-\u003emsix_entry-\u003eentry while computing an interrupt mask; execution aborts immediately with no out-of-bounds read, use-after-free, or data returned to the attacker.\nI:N - This is a pure NULL pointer read, not memory corruption; no attacker-controlled write, heap spray, or control-flow hijack primitive exists before the kernel faults.\nA:H - The NULL dereference occurs in hardirq context and causes a kernel oops or panic, fully denying availability; on internet-facing servers with ngbe in MSI/INTx mode an unauthenticated remote attacker can repeat the crash on every interrupt."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-27T05:01:01.751Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/cef4c5b9aca24651d069adf9462b221df6a2a669"
        },
        {
          "url": "https://git.kernel.org/stable/c/0ab482b2195edc000262f0eae1cdcb416b8f335d"
        },
        {
          "url": "https://git.kernel.org/stable/c/5f3a13e0bb5ebcc1ca2dfda42ea40b9f3c2be6ea"
        }
      ],
      "title": "net: ngbe: fix NULL pointer dereference in non-MSI-X interrupt enabling",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74741",
    "datePublished": "2026-08-26T14:36:52.937Z",
    "dateReserved": "2026-08-15T05:44:03.930Z",
    "dateUpdated": "2026-08-27T05:01:01.751Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}