nfsd: Fix cred ref leak in nfsd_nl_listener_set_doit().

{
  "id": "a8eaed6a3b19a5662e760b1f74e977b8986e6d93dcb437b63fdd1e4faa63a70f",
  "url": "https://osv.dev/vulnerability/CVE-2026-43394",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "nfsd: Fix cred ref leak in nfsd_nl_listener_set_doit().",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: nfsd: Fix cred ref leak in nfsd_nl_listener_set_doit(). nfsd_nl_listener_set_doit() uses get_current_cred() without put_cred(). As we can see from other callers, svc_xprt_create_from_sa() does not require the extra refcount. nfsd_nl_listener_set_doit() is always in the process context, sendmsg(), and current->cred does not go away. Let's use current_cred() in nfsd_nl_listener_set_doit().",
    "evidence": "osv:CVE-2026-43394",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.78",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.19",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.19.9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-43394",
      "aliases": [
        "CVE-2026-43394"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "16a471177496c8e04a9793812c187a2c1a2192fa"
                },
                {
                  "fixed": "02e87ec0bc706cb93fa47b43d18c4d10102c7d54"
                },
                {
                  "fixed": "019debe5851d7355bea9ff0248cc317878924d8f"
                },
                {
                  "fixed": "cba413765376bb466035c9160fa3130402971e2c"
                },
                {
                  "fixed": "92978c83bb4eef55d02a6c990c01c423131eefa7"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43394.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.10.0"
                },
                {
                  "fixed": "6.12.78"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.19"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "6.19.9"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43394.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.788403412Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/019debe5851d7355bea9ff0248cc317878924d8f",
        "https://git.kernel.org/stable/c/02e87ec0bc706cb93fa47b43d18c4d10102c7d54",
        "https://git.kernel.org/stable/c/92978c83bb4eef55d02a6c990c01c423131eefa7",
        "https://git.kernel.org/stable/c/cba413765376bb466035c9160fa3130402971e2c",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43394.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-43394",
        "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/2026/43xxx/CVE-2026-43394.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-43394",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 518233,
  "published_at": "2026-05-08T14:21:38.127+00:00"
}