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GHSA-XJ4X-XC4W-3C2G

Vulnerability from github – Published: 2026-09-17 18:32 – Updated: 2026-09-17 18:32

Details

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

md/bitmap: resume array on backlog_store() error path

backlog_store() suspends the array before checking whether a write-mostly device exists. If no such device exists, the error path only unlocks reconfig_mutex and leaves the array suspended, blocking subsequent I/O.

Use mddev_unlock_and_resume() to release both states.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-90390"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:17:38Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/bitmap: resume array on backlog_store() error path\n\nbacklog_store() suspends the array before checking whether a write-mostly\ndevice exists. If no such device exists, the error path only unlocks\nreconfig_mutex and leaves the array suspended, blocking subsequent I/O.\n\nUse mddev_unlock_and_resume() to release both states.",
  "id": "GHSA-xj4x-xc4w-3c2g",
  "modified": "2026-09-17T18:32:03Z",
  "published": "2026-09-17T18:32:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90390"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/03aad318f0a1f039dddf98739e705fdca3bf0d86"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2911cd0a0f4366a7e06832bc5f0a7fdcc138e4dc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6763fb409a0b4106676a52cf934440d9484b32c8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cc543e769b97d563b089b9e0ebf8ad361d15076f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-90390 (GCVE-0-2026-90390)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:09 – Updated: 2026-09-17 16:09

Title

md/bitmap: resume array on backlog_store() error path

Summary

In the Linux kernel, the following vulnerability has been resolved: md/bitmap: resume array on backlog_store() error path backlog_store() suspends the array before checking whether a write-mostly device exists. If no such device exists, the error path only unlocks reconfig_mutex and leaves the array suspended, blocking subsequent I/O. Use mddev_unlock_and_resume() to release both states.

Severity

No CVSS data available.

Assigner

Linux mitre root Scorecard

References

4 references

URL	Tags
https://git.kernel.org/stable/c/03aad318f0a1f039d…
https://git.kernel.org/stable/c/6763fb409a0b41066…
https://git.kernel.org/stable/c/cc543e769b97d563b…
https://git.kernel.org/stable/c/2911cd0a0f4366a7e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 58226942ad3d1423785f815ede5bcc832574f2ea , < 03aad318f0a1f039dddf98739e705fdca3bf0d86 (git) Affected: 58226942ad3d1423785f815ede5bcc832574f2ea , < 6763fb409a0b4106676a52cf934440d9484b32c8 (git) Affected: 58226942ad3d1423785f815ede5bcc832574f2ea , < cc543e769b97d563b089b9e0ebf8ad361d15076f (git) Affected: 58226942ad3d1423785f815ede5bcc832574f2ea , < 2911cd0a0f4366a7e06832bc5f0a7fdcc138e4dc (git)
Linux	Linux	Affected: 6.7 Unaffected: 0 , < 6.7 (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.52 , ≤ 6.18.* (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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          "programFiles": [
            "drivers/md/md-bitmap.c"
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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-XJ4X-XC4W-3C2G

CVE-2026-90390 (GCVE-0-2026-90390)

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