gsd-2017-12190
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
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.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2017-12190",
"description": "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.",
"id": "GSD-2017-12190",
"references": [
"https://www.suse.com/security/cve/CVE-2017-12190.html",
"https://access.redhat.com/errata/RHSA-2019:1190",
"https://access.redhat.com/errata/RHSA-2019:1170",
"https://access.redhat.com/errata/RHSA-2018:1854",
"https://access.redhat.com/errata/RHSA-2018:1062",
"https://access.redhat.com/errata/RHSA-2018:0676",
"https://access.redhat.com/errata/RHSA-2018:0654",
"https://ubuntu.com/security/CVE-2017-12190",
"https://advisories.mageia.org/CVE-2017-12190.html",
"https://alas.aws.amazon.com/cve/html/CVE-2017-12190.html",
"https://linux.oracle.com/cve/CVE-2017-12190.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
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"id": "GSD-2017-12190",
"modified": "2023-12-13T01:21:03.814866Z",
"schema_version": "1.4.0"
}
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"name": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.8",
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]
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},
"impact": {
"baseMetricV2": {
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 4.9,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
"version": "3.0"
},
"exploitabilityScore": 2.0,
"impactScore": 4.0
}
},
"lastModifiedDate": "2023-02-12T23:27Z",
"publishedDate": "2017-11-22T18:29Z"
}
}
}
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