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GHSA-J93M-M3F2-M54F

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: fix unit conversions in per_binval computation

LOLLM noticed that we're doing the unit conversion in the per_binval computation backwards -- xfs_buf_inval_log_space's second parameter is supposed to be in bytes, but max_binval is in units of fsblocks. Hence the conversion should be FSB -> B, not the other way around.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-97550"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-25T11:17:05Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: fix unit conversions in per_binval computation\n\nLOLLM noticed that we\u0027re doing the unit conversion in the per_binval\ncomputation backwards -- xfs_buf_inval_log_space\u0027s second parameter is\nsupposed to be in bytes, but max_binval is in units of fsblocks.  Hence\nthe conversion should be FSB -\u003e B, not the other way around.",
  "id": "GHSA-j93m-m3f2-m54f",
  "modified": "2026-09-25T12:31:24Z",
  "published": "2026-09-25T12:31:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97550"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/05cff7c2b79f76c7cfe90613a60e16aaaa051ef7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b5089a328acc83fe2f23127a79397a0bfd9ebc33"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cfeba3bdf4dfa405e29f4ee13a20e9063fd0b7ef"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-97550 (GCVE-0-2026-97550)

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

Title

xfs: fix unit conversions in per_binval computation

Summary

In the Linux kernel, the following vulnerability has been resolved: xfs: fix unit conversions in per_binval computation LOLLM noticed that we're doing the unit conversion in the per_binval computation backwards -- xfs_buf_inval_log_space's second parameter is supposed to be in bytes, but max_binval is in units of fsblocks. Hence the conversion should be FSB -> B, not the other way around.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/b5089a328acc83fe2…
https://git.kernel.org/stable/c/cfeba3bdf4dfa405e…
https://git.kernel.org/stable/c/05cff7c2b79f76c7c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: b2311ec6778fcde9d40cd9e22899f8bd594d8465 , < b5089a328acc83fe2f23127a79397a0bfd9ebc33 (git) Affected: b2311ec6778fcde9d40cd9e22899f8bd594d8465 , < cfeba3bdf4dfa405e29f4ee13a20e9063fd0b7ef (git) Affected: b2311ec6778fcde9d40cd9e22899f8bd594d8465 , < 05cff7c2b79f76c7cfe90613a60e16aaaa051ef7 (git)
Linux	Linux	Affected: 6.18 Unaffected: 0 , < 6.18 (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/reap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b5089a328acc83fe2f23127a79397a0bfd9ebc33",
              "status": "affected",
              "version": "b2311ec6778fcde9d40cd9e22899f8bd594d8465",
              "versionType": "git"
            },
            {
              "lessThan": "cfeba3bdf4dfa405e29f4ee13a20e9063fd0b7ef",
              "status": "affected",
              "version": "b2311ec6778fcde9d40cd9e22899f8bd594d8465",
              "versionType": "git"
            },
            {
              "lessThan": "05cff7c2b79f76c7cfe90613a60e16aaaa051ef7",
              "status": "affected",
              "version": "b2311ec6778fcde9d40cd9e22899f8bd594d8465",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/xfs/scrub/reap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "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": "6.18.53",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.7",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc3",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: fix unit conversions in per_binval computation\n\nLOLLM noticed that we\u0027re doing the unit conversion in the per_binval\ncomputation backwards -- xfs_buf_inval_log_space\u0027s second parameter is\nsupposed to be in bytes, but max_binval is in units of fsblocks.  Hence\nthe conversion should be FSB -\u003e B, not the other way around."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T10:21:43.450Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/b5089a328acc83fe2f23127a79397a0bfd9ebc33"
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        },
        {
          "url": "https://git.kernel.org/stable/c/05cff7c2b79f76c7cfe90613a60e16aaaa051ef7"
        }
      ],
      "title": "xfs: fix unit conversions in per_binval computation",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97550",
    "datePublished": "2026-09-25T10:21:43.450Z",
    "dateReserved": "2026-09-24T16:01:01.154Z",
    "dateUpdated": "2026-09-25T10:21:43.450Z",
    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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-J93M-M3F2-M54F

CVE-2026-97550 (GCVE-0-2026-97550)

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