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
CVE-2017-12190


To clipboard 

{
  "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"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2017-12190"
      ],
      "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.",
      "id": "GSD-2017-12190",
      "modified": "2023-12-13T01:21:03.814866Z",
      "schema_version": "1.4.0"
    }
  },
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        "ID": "CVE-2017-12190",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Linux kernel through v4.14-rc5",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "Linux kernel through v4.14-rc5"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
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          }
        ]
      },
      "problemtype": {
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      },
      "references": {
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            "name": "https://usn.ubuntu.com/3583-1/",
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            "refsource": "MISC",
            "url": "https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html"
          },
          {
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            "url": "https://access.redhat.com/errata/RHSA-2018:0676"
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          {
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            "url": "https://access.redhat.com/errata/RHSA-2018:1062"
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          {
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            "url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.8"
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          {
            "name": "http://www.securityfocus.com/bid/101911",
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            "url": "http://www.securityfocus.com/bid/101911"
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          {
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          },
          {
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            "refsource": "MISC",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1495089"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "4.13.7",
                "vulnerable": true
              }
            ],
            "operator": "OR"
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      },
      "cve": {
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            }
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              "url": "http://www.securityfocus.com/bid/101911"
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            {
              "name": "[debian-lts-announce] 20171210 [SECURITY] [DLA 1200-1] linux security update",
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            {
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              "url": "https://usn.ubuntu.com/3582-2/"
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            {
              "name": "RHSA-2018:0676",
              "refsource": "REDHAT",
              "tags": [],
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              "name": "RHSA-2018:1854",
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              "url": "https://access.redhat.com/errata/RHSA-2018:1854"
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            {
              "name": "RHSA-2019:1170",
              "refsource": "REDHAT",
              "tags": [],
              "url": "https://access.redhat.com/errata/RHSA-2019:1170"
            },
            {
              "name": "RHSA-2019:1190",
              "refsource": "REDHAT",
              "tags": [],
              "url": "https://access.redhat.com/errata/RHSA-2019:1190"
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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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