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nvd-json-data-feeds/CVE-2017/CVE-2017-121xx/CVE-2017-12190.json
cad-safe-bot 865d8c9414 Auto-Update: 2025-04-20T02:01:32.812855+00:00
2025-04-20 02:05:18 +00:00

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{
"id": "CVE-2017-12190",
"sourceIdentifier": "secalert@redhat.com",
"published": "2017-11-22T18:29:00.477",
"lastModified": "2025-04-20T01:37:25.860",
"vulnStatus": "Deferred",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The bio_map_user_iov and bio_unmap_user functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bio_add_pc_page function merges them into one, but the page reference is never dropped. This causes a memory leak and possible system lockup (exploitable against the host OS by a guest OS user, if a SCSI disk is passed through to a virtual machine) due to an out-of-memory condition."
},
{
"lang": "es",
"value": "Las funciones bio_map_user_iov y bio_unmap_user en block/bio.c en el kernel de Linux en versiones anteriores a la 4.13.8 realizan un refcount no equilibrado cuando un vector SCSI I/O tiene b\u00faferes peque\u00f1os consecutivos que pertenecen a la misma p\u00e1gina. La funci\u00f3n bio_add_pc_page los combina en uno solo, pero la referencia de la p\u00e1gina nunca se anula. Esto provoca una fuga de memoria y un posible bloqueo del sistema (explotable contra el host del sistema operativo por un usuario invitado del sistema operativo, si se pasa un disco SCSI a una m\u00e1quina virtual) debido a una condici\u00f3n de falta de memoria."
}
],
"metrics": {
"cvssMetricV30": [
{
"source": "nvd@nist.gov",
"type": "Primary",
"cvssData": {
"version": "3.0",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "CHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 2.0,
"impactScore": 4.0
}
],
"cvssMetricV2": [
{
"source": "nvd@nist.gov",
"type": "Primary",
"cvssData": {
"version": "2.0",
"vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
"baseScore": 4.9,
"accessVector": "LOCAL",
"accessComplexity": "LOW",
"authentication": "NONE",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "COMPLETE"
},
"baseSeverity": "MEDIUM",
"exploitabilityScore": 3.9,
"impactScore": 6.9,
"acInsufInfo": false,
"obtainAllPrivilege": false,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
]
},
"weaknesses": [
{
"source": "secalert@redhat.com",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-400"
}
]
},
{
"source": "nvd@nist.gov",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-772"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndIncluding": "4.13.7",
"matchCriteriaId": "11C6B206-8716-4A16-81BD-F3B8C8ACBE19"
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],
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