CVE-2026-23141 (GCVE-0-2026-23141)
Vulnerability from cvelistv5 – Published: 2026-02-14 15:36 – Updated: 2026-06-01 16:10
VLAI
EPSS
VEX
Title
btrfs: send: check for inline extents in range_is_hole_in_parent()
Summary
In the Linux kernel, the following vulnerability has been resolved:
btrfs: send: check for inline extents in range_is_hole_in_parent()
Before accessing the disk_bytenr field of a file extent item we need
to check if we are dealing with an inline extent.
This is because for inline extents their data starts at the offset of
the disk_bytenr field. So accessing the disk_bytenr
means we are accessing inline data or in case the inline data is less
than 8 bytes we can actually cause an invalid
memory access if this inline extent item is the first item in the leaf
or access metadata from other items.
Severity
5.5 (Medium)
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
82bfb2e7b645c8f228dc3b6d3b27b0b10125ca4f , < 901e581bfc44d181f7d9c3f11880dac3e89deb2e
(git)
Affected: 82bfb2e7b645c8f228dc3b6d3b27b0b10125ca4f , < d948055bd46a9c14d1d4217aed65c5c258c32903 (git) Affected: 82bfb2e7b645c8f228dc3b6d3b27b0b10125ca4f , < f2dc6ab3a14c2d2eb0b14783427eb9b03bf631c9 (git) Affected: 82bfb2e7b645c8f228dc3b6d3b27b0b10125ca4f , < db00636643e66898d79f2530ac9c56ebd5eca369 (git) Affected: 82bfb2e7b645c8f228dc3b6d3b27b0b10125ca4f , < 39f83f10772310ba4a77f2b5256aaf36994ef7e8 (git) Affected: 82bfb2e7b645c8f228dc3b6d3b27b0b10125ca4f , < 08b096c1372cd69627f4f559fb47c9fb67a52b39 (git) |
guessed | |
| Linux | Linux |
Affected:
4.11
Unaffected: 0 , < 4.11 (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.122 , ≤ 6.6.* (semver) Unaffected: 6.12.67 , ≤ 6.12.* (semver) Unaffected: 6.18.7 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix) |
guessed |
{
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{
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"status": "unaffected",
"version": "6.1.167",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.6.122",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.12.67",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: send: check for inline extents in range_is_hole_in_parent()\n\nBefore accessing the disk_bytenr field of a file extent item we need\nto check if we are dealing with an inline extent.\nThis is because for inline extents their data starts at the offset of\nthe disk_bytenr field. So accessing the disk_bytenr\nmeans we are accessing inline data or in case the inline data is less\nthan 8 bytes we can actually cause an invalid\nmemory access if this inline extent item is the first item in the leaf\nor access metadata from other items."
}
],
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"dateUpdated": "2026-06-01T16:10:51.476Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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},
{
"url": "https://git.kernel.org/stable/c/d948055bd46a9c14d1d4217aed65c5c258c32903"
},
{
"url": "https://git.kernel.org/stable/c/f2dc6ab3a14c2d2eb0b14783427eb9b03bf631c9"
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},
{
"url": "https://git.kernel.org/stable/c/08b096c1372cd69627f4f559fb47c9fb67a52b39"
}
],
"title": "btrfs: send: check for inline extents in range_is_hole_in_parent()",
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"cveId": "CVE-2026-23141",
"datePublished": "2026-02-14T15:36:07.417Z",
"dateReserved": "2026-01-13T15:37:45.973Z",
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"id": "msrc_CVE-2026-23141",
"initial_release_date": "2026-03-19T01:02:37.000Z",
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"source": "Microsoft CSAF VEX",
"status": "final",
"title": "btrfs: send: check for inline extents in range_is_hole_in_parent()",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-23141.json",
"version": "3"
},
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So accessing the disk_bytenr\\nmeans we are accessing inline data or in case the inline data is less\\nthan 8 bytes we can actually cause an invalid\\nmemory access if this inline extent item is the first item in the leaf\\nor access metadata from other items.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\\n\\nbtrfs: send: verificar extents en l\u00ednea en range_is_hole_in_parent()\\n\\nAntes de acceder al campo disk_bytenr de un elemento de extent de archivo, necesitamos verificar si estamos tratando con un extent en l\u00ednea.\\nEsto se debe a que para los extents en l\u00ednea, sus datos comienzan en el desplazamiento del campo disk_bytenr. As\u00ed que acceder al disk_bytenr significa que estamos accediendo a datos en l\u00ednea o, en caso de que los datos en l\u00ednea sean menores de 8 bytes, podemos realmente causar un acceso a memoria inv\u00e1lido si este elemento de extent en l\u00ednea es el primer elemento en la hoja o acceder a metadatos de otros 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"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-06-28T11:26:30+00:00",
"cve": "CVE-2026-23141",
"id": "CVE-2026-23141",
"initial_release_date": "2026-02-14T00:00:00+00:00",
"product_status:known_affected": "184",
"product_status:known_not_affected": "90",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: btrfs: send: check for inline extents in range_is_hole_in_parent()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23141.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- 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.
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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.
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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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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