CVE-2026-64519 (GCVE-0-2026-64519)

Vulnerability from cvelistv5 – Published: 2026-07-25 09:14 – Updated: 2026-07-25 09:14
VLAI
Title
NFSD: Fix infinite loop in layout state revocation
Summary
In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix infinite loop in layout state revocation find_one_sb_stid() skips stids whose sc_status is non-zero, but the SC_TYPE_LAYOUT case in nfsd4_revoke_states() never sets sc_status before calling nfsd4_close_layout(). The retry loop therefore finds the same layout stid on every iteration, hanging the revoker indefinitely.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1e33e1414bec54a4feafa9e67e2617031be0afe2 , < d1fc00ec02e9deb3f8d2bd59caf938c554fbc576 (git)
Affected: 1e33e1414bec54a4feafa9e67e2617031be0afe2 , < fe59ae27d7346245f5d8d97220f374e63efd28b5 (git)
Affected: 1e33e1414bec54a4feafa9e67e2617031be0afe2 , < 44e5e4eb3a07bf3e1d931dd9f96f3edcfa376605 (git)
Affected: 1e33e1414bec54a4feafa9e67e2617031be0afe2 , < 4f8ef58c10bfe5f86a643c7c8331b37e69e3dae1 (git)
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Linux Linux Affected: 6.9
Unaffected: 0 , < 6.9 (semver)
Unaffected: 6.12.92 , ≤ 6.12.* (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "fs/nfsd/nfs4state.c"
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              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSD: Fix infinite loop in layout state revocation\n\nfind_one_sb_stid() skips stids whose sc_status is non-zero, but the\nSC_TYPE_LAYOUT case in nfsd4_revoke_states() never sets sc_status\nbefore calling nfsd4_close_layout(). The retry loop therefore finds\nthe same layout stid on every iteration, hanging the revoker\nindefinitely."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-25T09:14:45.322Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/d1fc00ec02e9deb3f8d2bd59caf938c554fbc576"
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          "url": "https://git.kernel.org/stable/c/fe59ae27d7346245f5d8d97220f374e63efd28b5"
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      ],
      "title": "NFSD: Fix infinite loop in layout state revocation",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64519",
    "datePublished": "2026-07-25T09:14:45.322Z",
    "dateReserved": "2026-07-19T15:36:31.794Z",
    "dateUpdated": "2026-07-25T09:14:45.322Z",
    "state": "PUBLISHED"
  },
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      "date": "2026-08-23",
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    "redhat_vex": {
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      "cve": "CVE-2026-64519",
      "id": "CVE-2026-64519",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: NFSD: Fix infinite loop in layout state revocation",
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      "current_release_date": "2026-08-07T16:59:53Z",
      "cve": "CVE-2026-64519",
      "id": "CVE-2026-64519",
      "initial_release_date": "2026-07-25T15:57:51Z",
      "product_status:known_affected": "29",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64519",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64519.json",
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    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.