Vulnerability-Lookup

GHSA-FRX7-8J8J-MC25

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:

btrfs: detach failed sprout device from transaction update list

When creating the first metadata chunk for a sprout filesystem, create_chunk() adds the new device to the transaction dev_update_list through device->post_commit_list.

If the subsequent system chunk creation fails, btrfs_init_new_device() aborts the transaction and releases the device while post_commit_list is still linked. This triggers a warning in btrfs_free_device() and leaves the transaction list referencing freed memory.

Detach the device while holding chunk_mutex before releasing it.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98091"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-25T11:17:38Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: detach failed sprout device from transaction update list\n\nWhen creating the first metadata chunk for a sprout filesystem,\ncreate_chunk() adds the new device to the transaction dev_update_list\nthrough device-\u003epost_commit_list.\n\nIf the subsequent system chunk creation fails, btrfs_init_new_device()\naborts the transaction and releases the device while post_commit_list is\nstill linked. This triggers a warning in btrfs_free_device() and leaves\nthe transaction list referencing freed memory.\n\nDetach the device while holding chunk_mutex before releasing it.",
  "id": "GHSA-frx7-8j8j-mc25",
  "modified": "2026-09-25T12:31:36Z",
  "published": "2026-09-25T12:31:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98091"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ea6814bc0ff7cff443241bd34db9f0f828f3190"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8b001df2b37ca022f710f3254fbb0bcd6d9e1bed"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c93b3c43df561cd9f592cee20ae058b563f9e5b6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e9e7e37afa85db770e6084360b21a21a8b3a583f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98091 (GCVE-0-2026-98091)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:24 – Updated: 2026-09-25 10:24

Title

btrfs: detach failed sprout device from transaction update list

Summary

In the Linux kernel, the following vulnerability has been resolved: btrfs: detach failed sprout device from transaction update list When creating the first metadata chunk for a sprout filesystem, create_chunk() adds the new device to the transaction dev_update_list through device->post_commit_list. If the subsequent system chunk creation fails, btrfs_init_new_device() aborts the transaction and releases the device while post_commit_list is still linked. This triggers a warning in btrfs_free_device() and leaves the transaction list referencing freed memory. Detach the device while holding chunk_mutex before releasing it.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/e9e7e37afa85db770…
https://git.kernel.org/stable/c/8b001df2b37ca022f…
https://git.kernel.org/stable/c/0ea6814bc0ff7cff4…
https://git.kernel.org/stable/c/c93b3c43df561cd9f…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: bbbf7243d62d8be73b7ef60721c127b36b2d523e , < e9e7e37afa85db770e6084360b21a21a8b3a583f (git) Affected: bbbf7243d62d8be73b7ef60721c127b36b2d523e , < 8b001df2b37ca022f710f3254fbb0bcd6d9e1bed (git) Affected: bbbf7243d62d8be73b7ef60721c127b36b2d523e , < 0ea6814bc0ff7cff443241bd34db9f0f828f3190 (git) Affected: bbbf7243d62d8be73b7ef60721c127b36b2d523e , < c93b3c43df561cd9f592cee20ae058b563f9e5b6 (git)
Linux	Linux	Affected: 5.2 Unaffected: 0 , < 5.2 (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-rc2 , ≤ * (original_commit_for_fix)

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        {
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          "programFiles": [
            "fs/btrfs/volumes.c"
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          "vendor": "Linux",
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              "versionType": "git"
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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.
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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-FRX7-8J8J-MC25

CVE-2026-98091 (GCVE-0-2026-98091)

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