CVE-2026-43394 (GCVE-0-2026-43394)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:21 – Updated: 2026-05-08 14:21
VLAI?
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().
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 16a471177496c8e04a9793812c187a2c1a2192fa , < 02e87ec0bc706cb93fa47b43d18c4d10102c7d54 (git)
Affected: 16a471177496c8e04a9793812c187a2c1a2192fa , < 019debe5851d7355bea9ff0248cc317878924d8f (git)
Affected: 16a471177496c8e04a9793812c187a2c1a2192fa , < cba413765376bb466035c9160fa3130402971e2c (git)
Affected: 16a471177496c8e04a9793812c187a2c1a2192fa , < 92978c83bb4eef55d02a6c990c01c423131eefa7 (git)
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    Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.12.78 , ≤ 6.12.* (semver)
Unaffected: 6.18.19 , ≤ 6.18.* (semver)
Unaffected: 6.19.9 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
            "fs/nfsd/nfsctl.c"
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: Fix cred ref leak in nfsd_nl_listener_set_doit().\n\nnfsd_nl_listener_set_doit() uses get_current_cred() without\nput_cred().\n\nAs we can see from other callers, svc_xprt_create_from_sa()\ndoes not require the extra refcount.\n\nnfsd_nl_listener_set_doit() is always in the process context,\nsendmsg(), and current-\u003ecred does not go away.\n\nLet\u0027s use current_cred() in nfsd_nl_listener_set_doit()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-08T14:21:38.127Z",
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        "shortName": "Linux"
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      ],
      "title": "nfsd: Fix cred ref leak in nfsd_nl_listener_set_doit().",
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    "cveId": "CVE-2026-43394",
    "datePublished": "2026-05-08T14:21:38.127Z",
    "dateReserved": "2026-05-01T14:12:56.007Z",
    "dateUpdated": "2026-05-08T14:21:38.127Z",
    "state": "PUBLISHED"
  },
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