net: netpoll: initialize work queue before error checks

{
  "id": "4cbf9db7d2abe09dbab75e32a3705e1ff66f4d68c95d5f6b0f525116b3f6fd5f",
  "url": "https://osv.dev/vulnerability/CVE-2025-68762",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net: netpoll: initialize work queue before error checks",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net: netpoll: initialize work queue before error checks Prevent a kernel warning when netconsole setup fails on devices with IFF_DISABLE_NETPOLL flag. The warning (at kernel/workqueue.c:4242 in __flush_work) occurs because the cleanup path tries to cancel an uninitialized work queue. When __netpoll_setup() encounters a device with IFF_DISABLE_NETPOLL, it fails early and calls skb_pool_flush() for cleanup. This function calls cancel_work_sync(&np->refill_wq), but refill_wq hasn't been initialized yet, triggering the warning. Move INIT_WORK() to the beginning of __netpoll_setup(), ensuring the work queue is properly initialized before any potential failure points. This allows the cleanup path to safely cancel the work queue regardless of where the setup fails.",
    "evidence": "osv:CVE-2025-68762",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.17.13",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-68762",
      "aliases": [
        "CVE-2025-68762"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "248f6571fd4c51531f7f8f07f186f7ae98a50afc"
                },
                {
                  "fixed": "a90d0dc38a10347078cca60e7495ad0648838f18"
                },
                {
                  "fixed": "760bc6ceda8e2c273c0e2018ad2595967c3dd308"
                },
                {
                  "fixed": "e5235eb6cfe02a51256013a78f7b28779a7740d5"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68762.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.15.0"
                },
                {
                  "fixed": "6.17.13"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.18.0"
                },
                {
                  "fixed": "6.18.2"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68762.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.174609934Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/760bc6ceda8e2c273c0e2018ad2595967c3dd308",
        "https://git.kernel.org/stable/c/a90d0dc38a10347078cca60e7495ad0648838f18",
        "https://git.kernel.org/stable/c/e5235eb6cfe02a51256013a78f7b28779a7740d5",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68762.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-68762",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68762.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-68762",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 517230,
  "published_at": "2026-01-05T09:32:34.743+00:00"
}