Vulnerability-Lookup

GHSA-RMC7-77JW-FVM4

Vulnerability from github – Published: 2026-08-22 18:30 – Updated: 2026-08-22 18:30

Details

In the Linux kernel, the following vulnerability has been resolved:

NFS: Pin the 'struct nfs_server' during a FREE_STATEID call

Dan Aloni reports that he was able to hit a use-after-free bug if a FREE_STATEID operation gets delayed for whatever reason. Fix this by bumping the refcount of the 'struct nfs_server' object for the duration of the FREE_STATEID so it doesn't get cleaned up from underneath us while operations are still in flight.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-74730"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-22T16:16:48Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFS: Pin the \u0027struct nfs_server\u0027 during a FREE_STATEID call\n\nDan Aloni reports that he was able to hit a use-after-free bug if a\nFREE_STATEID operation gets delayed for whatever reason. Fix this by\nbumping the refcount of the \u0027struct nfs_server\u0027 object for the duration\nof the FREE_STATEID so it doesn\u0027t get cleaned up from underneath us\nwhile operations are still in flight.",
  "id": "GHSA-rmc7-77jw-fvm4",
  "modified": "2026-08-22T18:30:30Z",
  "published": "2026-08-22T18:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74730"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/80ed3d762628b36c9e4b22fac7c65b72ef3b13dd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/af62f1af182d33a0de38308c012841885d8ab92e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/caee6a68ffaa5016dfc01cd0b3dc1896a32e3abd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cf616096a0f3a2b60f7d68b6b39674a6867ded9c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d71dfffa512e71b166a889484e4c3b148a9a3af2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d858ab09e787106432d4d9830bad9dfedf02f890"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed1161ab6239761958b38d5667225634fc2be894"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed2f92ce2fc48463c41e0e540b9a3454889e8af8"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-74730 (GCVE-0-2026-74730)

Vulnerability from cvelistv5 – Published: 2026-08-22 15:33 – Updated: 2026-08-22 15:33

Title

NFS: Pin the 'struct nfs_server' during a FREE_STATEID call

Summary

In the Linux kernel, the following vulnerability has been resolved: NFS: Pin the 'struct nfs_server' during a FREE_STATEID call Dan Aloni reports that he was able to hit a use-after-free bug if a FREE_STATEID operation gets delayed for whatever reason. Fix this by bumping the refcount of the 'struct nfs_server' object for the duration of the FREE_STATEID so it doesn't get cleaned up from underneath us while operations are still in flight.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/ed2f92ce2fc48463c…
https://git.kernel.org/stable/c/d858ab09e78710643…
https://git.kernel.org/stable/c/af62f1af182d33a0d…
https://git.kernel.org/stable/c/caee6a68ffaa5016d…
https://git.kernel.org/stable/c/ed1161ab623976195…
https://git.kernel.org/stable/c/d71dfffa512e71b16…
https://git.kernel.org/stable/c/80ed3d762628b36c9…
https://git.kernel.org/stable/c/cf616096a0f3a2b60…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 , < ed2f92ce2fc48463c41e0e540b9a3454889e8af8 (git) Affected: 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 , < d858ab09e787106432d4d9830bad9dfedf02f890 (git) Affected: 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 , < af62f1af182d33a0de38308c012841885d8ab92e (git) Affected: 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 , < caee6a68ffaa5016dfc01cd0b3dc1896a32e3abd (git) Affected: 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 , < ed1161ab6239761958b38d5667225634fc2be894 (git) Affected: 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 , < d71dfffa512e71b166a889484e4c3b148a9a3af2 (git) Affected: 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 , < 80ed3d762628b36c9e4b22fac7c65b72ef3b13dd (git) Affected: 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 , < cf616096a0f3a2b60f7d68b6b39674a6867ded9c (git)
Linux	Linux	Affected: 3.10 Unaffected: 0 , < 3.10 (semver) Unaffected: 5.10.265 , ≤ 5.10.* (semver) Unaffected: 5.15.216 , ≤ 5.15.* (semver) Unaffected: 6.1.183 , ≤ 6.1.* (semver) Unaffected: 6.6.152 , ≤ 6.6.* (semver) Unaffected: 6.12.104 , ≤ 6.12.* (semver) Unaffected: 6.18.45 , ≤ 6.18.* (semver) Unaffected: 7.1.9 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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        {
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          "programFiles": [
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              "version": "3.10"
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.18.45",
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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

GHSA-RMC7-77JW-FVM4

CVE-2026-74730 (GCVE-0-2026-74730)

Tags

Sightings

Nomenclature