Vulnerability-Lookup

GHSA-H5F4-6RM7-58WM

Vulnerability from github – Published: 2026-05-08 15:31 – Updated: 2026-05-26 15:32

Details

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

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-43394"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-08T15:16:50Z",
    "severity": "MODERATE"
  },
  "details": "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().",
  "id": "GHSA-h5f4-6rm7-58wm",
  "modified": "2026-05-26T15:32:08Z",
  "published": "2026-05-08T15:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43394"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/019debe5851d7355bea9ff0248cc317878924d8f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/02e87ec0bc706cb93fa47b43d18c4d10102c7d54"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/92978c83bb4eef55d02a6c990c01c423131eefa7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cba413765376bb466035c9160fa3130402971e2c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

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

Vulnerability from cvelistv5 – Published: 2026-05-08 14:21 – Updated: 2026-05-11 22:23

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

Linux

References

4 references

URL	Tags
https://git.kernel.org/stable/c/02e87ec0bc706cb93…
https://git.kernel.org/stable/c/019debe5851d7355b…
https://git.kernel.org/stable/c/cba413765376bb466…
https://git.kernel.org/stable/c/92978c83bb4eef55d…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 16a471177496c8e04a9793812c187a2c1a2192fa , < 02e87ec0bc706cb93fa47b43d18c4d10102c7d54 (git) Affected: 16a471177496c8e04a9793812c187a2c1a2192fa , < 019debe5851d7355bea9ff0248cc317878924d8f (git) Affected: 16a471177496c8e04a9793812c187a2c1a2192fa , < cba413765376bb466035c9160fa3130402971e2c (git) Affected: 16a471177496c8e04a9793812c187a2c1a2192fa , < 92978c83bb4eef55d02a6c990c01c423131eefa7 (git)
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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          "programFiles": [
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-H5F4-6RM7-58WM

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

Tags

Sightings

Nomenclature