FKIE_CVE-2026-43309
Vulnerability from fkie_nvd - Published: 2026-05-08 14:16 - Updated: 2026-06-17 10:49
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
md raid: fix hang when stopping arrays with metadata through dm-raid
When using device-mapper's dm-raid target, stopping a RAID array can cause
the system to hang under specific conditions.
This occurs when:
- A dm-raid managed device tree is suspended from top to bottom
(the top-level RAID device is suspended first, followed by its
underlying metadata and data devices)
- The top-level RAID device is then removed
Removing the top-level device triggers a hang in the following sequence:
the dm-raid destructor calls md_stop(), which tries to flush the
write-intent bitmap by writing to the metadata sub-devices. However, these
devices are already suspended, making them unable to complete the write-intent
operations and causing an indefinite block.
Fix:
- Prevent bitmap flushing when md_stop() is called from dm-raid
destructor context
and avoid a quiescing/unquescing cycle which could also cause I/O
- Still allow write-intent bitmap flushing when called from dm-raid
suspend context
This ensures that RAID array teardown can complete successfully even when the
underlying devices are in a suspended state.
This second patch uses md_is_rdwr() to distinguish between suspend and
destructor paths as elaborated on above.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | 6.0 | |
| linux | linux_kernel | 6.0 | |
| linux | linux_kernel | 6.0 | |
| linux | linux_kernel | 6.0 | |
| linux | linux_kernel | 6.0 | |
| linux | linux_kernel | 6.0 |
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},
{
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}
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}
],
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd raid: fix hang when stopping arrays with metadata through dm-raid\n\nWhen using device-mapper\u0027s dm-raid target, stopping a RAID array can cause\nthe system to hang under specific conditions.\n\nThis occurs when:\n\n- A dm-raid managed device tree is suspended from top to bottom\n (the top-level RAID device is suspended first, followed by its\n underlying metadata and data devices)\n\n- The top-level RAID device is then removed\n\nRemoving the top-level device triggers a hang in the following sequence:\nthe dm-raid destructor calls md_stop(), which tries to flush the\nwrite-intent bitmap by writing to the metadata sub-devices. However, these\ndevices are already suspended, making them unable to complete the write-intent\noperations and causing an indefinite block.\n\nFix:\n\n- Prevent bitmap flushing when md_stop() is called from dm-raid\ndestructor context\n and avoid a quiescing/unquescing cycle which could also cause I/O\n\n- Still allow write-intent bitmap flushing when called from dm-raid\nsuspend context\n\nThis ensures that RAID array teardown can complete successfully even when the\nunderlying devices are in a suspended state.\n\nThis second patch uses md_is_rdwr() to distinguish between suspend and\ndestructor paths as elaborated on above."
}
],
"id": "CVE-2026-43309",
"lastModified": "2026-06-17T10:49:21.333",
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"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"published": "2026-05-08T14:16:38.250",
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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- 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.
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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