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GHSA-56GF-PMQ5-4WG3

Vulnerability from github – Published: 2026-09-25 12:31 – Updated: 2026-09-25 12:31

Details

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

xfs: don't spin forever on zero-length dirents when salvaging them

LOLLM noticed that xrep_dir_recover_data can spin forever if it encounters an unused dirent that claims to have length zero. Fix that, and prevent the same thing from happening with a zero-length entry.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-97546"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-25T11:17:04Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: don\u0027t spin forever on zero-length dirents when salvaging them\n\nLOLLM noticed that xrep_dir_recover_data can spin forever if it\nencounters an unused dirent that claims to have length zero.  Fix that,\nand prevent the same thing from happening with a zero-length entry.",
  "id": "GHSA-56gf-pmq5-4wg3",
  "modified": "2026-09-25T12:31:23Z",
  "published": "2026-09-25T12:31:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97546"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/08754ebfa5c28e8d57316b1bd7a5a921a5e2e762"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5442f0c56445618544a801fb4dae35aed87a1aaa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9f84792b40d0c96833341602144574bf0bd14a6a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a455c83ce5dc1a2da33b1b84253d298372a8dfbd"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-97546 (GCVE-0-2026-97546)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:21 – Updated: 2026-09-25 10:21

Title

xfs: don't spin forever on zero-length dirents when salvaging them

Summary

In the Linux kernel, the following vulnerability has been resolved: xfs: don't spin forever on zero-length dirents when salvaging them LOLLM noticed that xrep_dir_recover_data can spin forever if it encounters an unused dirent that claims to have length zero. Fix that, and prevent the same thing from happening with a zero-length entry.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/5442f0c5644561854…
https://git.kernel.org/stable/c/08754ebfa5c28e8d5…
https://git.kernel.org/stable/c/a455c83ce5dc1a2da…
https://git.kernel.org/stable/c/9f84792b40d0c9683…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: b1991ee3e7cf852e95a3498801303cfbb4468681 , < 5442f0c56445618544a801fb4dae35aed87a1aaa (git) Affected: b1991ee3e7cf852e95a3498801303cfbb4468681 , < 08754ebfa5c28e8d57316b1bd7a5a921a5e2e762 (git) Affected: b1991ee3e7cf852e95a3498801303cfbb4468681 , < a455c83ce5dc1a2da33b1b84253d298372a8dfbd (git) Affected: b1991ee3e7cf852e95a3498801303cfbb4468681 , < 9f84792b40d0c96833341602144574bf0bd14a6a (git)
Linux	Linux	Affected: 6.10 Unaffected: 0 , < 6.10 (semver) Unaffected: 6.12.111 , ≤ 6.12.* (semver) Unaffected: 6.18.53 , ≤ 6.18.* (semver) Unaffected: 7.2.7 , ≤ 7.2.* (semver) Unaffected: 7.3-rc3 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/xfs/scrub/dir_repair.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5442f0c56445618544a801fb4dae35aed87a1aaa",
              "status": "affected",
              "version": "b1991ee3e7cf852e95a3498801303cfbb4468681",
              "versionType": "git"
            },
            {
              "lessThan": "08754ebfa5c28e8d57316b1bd7a5a921a5e2e762",
              "status": "affected",
              "version": "b1991ee3e7cf852e95a3498801303cfbb4468681",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
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            }
          ]
        },
        {
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          "product": "Linux",
          "programFiles": [
            "fs/xfs/scrub/dir_repair.c"
          ],
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.111",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
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                },
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                }
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: don\u0027t spin forever on zero-length dirents when salvaging them\n\nLOLLM noticed that xrep_dir_recover_data can spin forever if it\nencounters an unused dirent that claims to have length zero.  Fix that,\nand prevent the same thing from happening with a zero-length entry."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T10:21:41.029Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5442f0c56445618544a801fb4dae35aed87a1aaa"
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      ],
      "title": "xfs: don\u0027t spin forever on zero-length dirents when salvaging them",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97546",
    "datePublished": "2026-09-25T10:21:41.029Z",
    "dateReserved": "2026-09-24T16:01:01.154Z",
    "dateUpdated": "2026-09-25T10:21:41.029Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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.
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GHSA-56GF-PMQ5-4WG3

CVE-2026-97546 (GCVE-0-2026-97546)

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