{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-50094",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T20:22:55.627667Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T20:27:19.526Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/sfc/efx_channels.c",
            "drivers/net/ethernet/sfc/siena/efx_channels.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "65d4fc76d75c136744e67754d20feda609e7b793",
              "status": "affected",
              "version": "401cb7dae8130fd34eb84648e02ab4c506df7d5e",
              "versionType": "git"
            },
            {
              "lessThan": "55e802468e1d38dec8e25a2fdb6078d45b647e8c",
              "status": "affected",
              "version": "401cb7dae8130fd34eb84648e02ab4c506df7d5e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/sfc/efx_channels.c",
            "drivers/net/ethernet/sfc/siena/efx_channels.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": "6.11.*",
              "status": "unaffected",
              "version": "6.11.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11.4",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsfc: Don\u0027t invoke xdp_do_flush() from netpoll.\n\nYury reported a crash in the sfc driver originated from\nnetpoll_send_udp(). The netconsole sends a message and then netpoll\ninvokes the driver\u0027s NAPI function with a budget of zero. It is\ndedicated to allow driver to free TX resources, that it may have used\nwhile sending the packet.\n\nIn the netpoll case the driver invokes xdp_do_flush() unconditionally,\nleading to crash because bpf_net_context was never assigned.\n\nInvoke xdp_do_flush() only if budget is not zero."
        }
      ],
      "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 crash is reached through the netpoll/netconsole transmit path on the sfc NIC, and an unauthenticated remote attacker can drive both required conditions with packets alone \u2014 flood-induced rate-limited kernel log lines (SYN-flood/martian-source/conntrack-full messages) supply the printk, and the same flood supplies the TX-queue contention that forces `__netpoll_send_skb()` into the `netpoll_poll_dev()` retry loop.\nAC:L - Once netconsole is active on an sfc interface, every entry into `netpoll_poll_dev()` crashes deterministically \u2014 there is no race, no memory-layout dependency, and no timing window, and the attacker creates the TX contention that forces that entry by sustaining traffic.\nPR:N - No authentication or credential of any kind is checked along the path; the trigger is an ordinary kernel log message being shipped by netconsole, and the remote packets that induce those messages are processed pre-authentication by the TCP/IP stack.\nUI:N - No victim action is needed \u2014 netconsole emits on every printk automatically, so the attacker\u0027s own traffic completes the trigger without any local user or administrator doing anything.\nS:U - The faulting read and its consequences are confined to the kernel of the affected host; no VM, IOMMU, or sandbox boundary is crossed.\nC:N - The defect is a read of a NULL pointer at a fixed small offset whose result is never returned to or observable by the attacker; nothing is disclosed.\nI:N - No write occurs and no attacker-controlled data is stored \u2014 the faulting access is a load, so no kernel state is modified.\nA:H - The NULL dereference occurs in netpoll/console context with interrupts disabled, producing a kernel oops that is generally fatal, and it re-fires on every subsequent log message, so the host is reliably taken down."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:41:37.056Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/65d4fc76d75c136744e67754d20feda609e7b793"
        },
        {
          "url": "https://git.kernel.org/stable/c/55e802468e1d38dec8e25a2fdb6078d45b647e8c"
        }
      ],
      "title": "sfc: Don\u0027t invoke xdp_do_flush() from netpoll.",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50094",
    "datePublished": "2024-11-05T17:04:57.299Z",
    "dateReserved": "2024-10-21T19:36:19.943Z",
    "dateUpdated": "2026-08-05T11:41:37.056Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}