fkie_cve-2024-47757
Vulnerability from fkie_nvd
Published
2024-10-21 13:15
Modified
2024-11-08 16:15
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
nilfs2: fix potential oob read in nilfs_btree_check_delete()
The function nilfs_btree_check_delete(), which checks whether degeneration
to direct mapping occurs before deleting a b-tree entry, causes memory
access outside the block buffer when retrieving the maximum key if the
root node has no entries.
This does not usually happen because b-tree mappings with 0 child nodes
are never created by mkfs.nilfs2 or nilfs2 itself. However, it can happen
if the b-tree root node read from a device is configured that way, so fix
this potential issue by adding a check for that case.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
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"descriptions": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix potential oob read in nilfs_btree_check_delete()\n\nThe function nilfs_btree_check_delete(), which checks whether degeneration\nto direct mapping occurs before deleting a b-tree entry, causes memory\naccess outside the block buffer when retrieving the maximum key if the\nroot node has no entries.\n\nThis does not usually happen because b-tree mappings with 0 child nodes\nare never created by mkfs.nilfs2 or nilfs2 itself. However, it can happen\nif the b-tree root node read from a device is configured that way, so fix\nthis potential issue by adding a check for that case."
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"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nilfs2: se corrige una posible lectura fuera de l\u00ednea en nilfs_btree_check_delete() La funci\u00f3n nilfs_btree_check_delete(), que comprueba si se produce una degeneraci\u00f3n en el mapeo directo antes de eliminar una entrada del \u00e1rbol b, provoca un acceso a la memoria fuera del b\u00fafer de bloque al recuperar la clave m\u00e1xima si el nodo ra\u00edz no tiene entradas. Esto no suele ocurrir porque los mapeos de \u00e1rboles b con 0 nodos secundarios nunca son creados por mkfs.nilfs2 o nilfs2 en s\u00ed. Sin embargo, puede ocurrir si el nodo ra\u00edz del \u00e1rbol b que lee desde un dispositivo est\u00e1 configurado de esa manera, as\u00ed que solucione este posible problema a\u00f1adiendo una comprobaci\u00f3n para ese caso."
}
],
"id": "CVE-2024-47757",
"lastModified": "2024-11-08T16:15:28.343",
"metrics": {
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"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
"version": "3.1"
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"published": "2024-10-21T13:15:05.640",
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"vulnStatus": "Modified",
"weaknesses": [
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"value": "CWE-125"
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],
"source": "nvd@nist.gov",
"type": "Primary"
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}
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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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