github - ghsa-q638-mxxh-qchw

ghsa-q638-mxxh-qchw

Vulnerability from github

Published

2025-09-15 15:31

Modified

2025-09-15 15:31

Details

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

btrfs: abort transaction on unexpected eb generation at btrfs_copy_root()

If we find an unexpected generation for the extent buffer we are cloning at btrfs_copy_root(), we just WARN_ON() and don't error out and abort the transaction, meaning we allow to persist metadata with an unexpected generation. Instead of warning only, abort the transaction and return -EUCLEAN.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-39800"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-15T13:15:35Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: abort transaction on unexpected eb generation at btrfs_copy_root()\n\nIf we find an unexpected generation for the extent buffer we are cloning\nat btrfs_copy_root(), we just WARN_ON() and don\u0027t error out and abort the\ntransaction, meaning we allow to persist metadata with an unexpected\ngeneration. Instead of warning only, abort the transaction and return\n-EUCLEAN.",
  "id": "GHSA-q638-mxxh-qchw",
  "modified": "2025-09-15T15:31:21Z",
  "published": "2025-09-15T15:31:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39800"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/33e8f24b52d2796b8cfb28c19a1a7dd6476323a8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4290e34fb87ae556b12c216efd0ae91583446b7a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4734255ef39b416864139dcda96a387fe5f33a6a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/da2124719f386b6e5d4d4b1a2e67c440e4d5892f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f4f5bd9251a4cbe55aaa05725c6c3c32ad1f74b3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-39800 (GCVE-0-2025-39800)

Vulnerability from cvelistv5

Published

2025-09-15 12:36

Modified

2025-09-15 12:36

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: btrfs: abort transaction on unexpected eb generation at btrfs_copy_root() If we find an unexpected generation for the extent buffer we are cloning at btrfs_copy_root(), we just WARN_ON() and don't error out and abort the transaction, meaning we allow to persist metadata with an unexpected generation. Instead of warning only, abort the transaction and return -EUCLEAN.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/4290e34fb87ae556b12c216efd0ae91583446b7a
	https://git.kernel.org/stable/c/4734255ef39b416864139dcda96a387fe5f33a6a
	https://git.kernel.org/stable/c/da2124719f386b6e5d4d4b1a2e67c440e4d5892f
	https://git.kernel.org/stable/c/f4f5bd9251a4cbe55aaa05725c6c3c32ad1f74b3
	https://git.kernel.org/stable/c/33e8f24b52d2796b8cfb28c19a1a7dd6476323a8

Impacted products

Vendor

Product

Version

▼

Linux

Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Linux

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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/ctree.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
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              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
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              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
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              "status": "affected",
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/ctree.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.149",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.103",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.149",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.103",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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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\nbtrfs: abort transaction on unexpected eb generation at btrfs_copy_root()\n\nIf we find an unexpected generation for the extent buffer we are cloning\nat btrfs_copy_root(), we just WARN_ON() and don\u0027t error out and abort the\ntransaction, meaning we allow to persist metadata with an unexpected\ngeneration. Instead of warning only, abort the transaction and return\n-EUCLEAN."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-15T12:36:43.043Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/33e8f24b52d2796b8cfb28c19a1a7dd6476323a8"
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    "cveId": "CVE-2025-39800",
    "datePublished": "2025-09-15T12:36:43.043Z",
    "dateReserved": "2025-04-16T07:20:57.133Z",
    "dateUpdated": "2025-09-15T12:36:43.043Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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