ubuntu-cve-2018-6485
Vulnerability from osv_ubuntu
Published
2018-02-01 14:29
Modified
2026-04-22 07:38
Summary
Details

An integer overflow in the implementation of the posix_memalign in memalign functions in the GNU C Library (aka glibc or libc6) 2.26 and earlier could cause these functions to return a pointer to a heap area that is too small, potentially leading to heap corruption.

Severity
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "eglibc-source",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          },
          {
            "binary_name": "libc-bin",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          },
          {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          },
          {
            "binary_name": "libc6",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          },
          {
            "binary_name": "libc6-amd64",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          },
          {
            "binary_name": "libc6-armel",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          },
          {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          },
          {
            "binary_name": "libc6-dev-armel",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          },
          {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          },
          {
            "binary_name": "libc6-dev-ppc64",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          },
          {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          },
          {
            "binary_name": "libc6-i386",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          },
          {
            "binary_name": "libc6-pic",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          },
          {
            "binary_name": "libc6-ppc64",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          },
          {
            "binary_name": "libc6-prof",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          },
          {
            "binary_name": "libc6-x32",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          },
          {
            "binary_name": "multiarch-support",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          },
          {
            "binary_name": "nscd",
            "binary_version": "2.19-0ubuntu6.15+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "eglibc",
        "purl": "pkg:deb/ubuntu/eglibc@2.19-0ubuntu6.15+esm1?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.19-0ubuntu6.15+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.17-93ubuntu4",
        "2.18-0ubuntu1",
        "2.18-0ubuntu2",
        "2.18-0ubuntu4",
        "2.18-0ubuntu5",
        "2.18-0ubuntu6",
        "2.18-0ubuntu7",
        "2.19-0ubuntu2",
        "2.19-0ubuntu3",
        "2.19-0ubuntu4",
        "2.19-0ubuntu5",
        "2.19-0ubuntu6",
        "2.19-0ubuntu6.1",
        "2.19-0ubuntu6.3",
        "2.19-0ubuntu6.4",
        "2.19-0ubuntu6.5",
        "2.19-0ubuntu6.6",
        "2.19-0ubuntu6.7",
        "2.19-0ubuntu6.8",
        "2.19-0ubuntu6.9",
        "2.19-0ubuntu6.10",
        "2.19-0ubuntu6.11",
        "2.19-0ubuntu6.13",
        "2.19-0ubuntu6.14",
        "2.19-0ubuntu6.15"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "glibc-source",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "libc-bin",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "libc6",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "libc6-amd64",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "libc6-armel",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "libc6-dev-armel",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "libc6-dev-ppc64",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "libc6-dev-s390",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "libc6-i386",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "libc6-pic",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "libc6-ppc64",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "libc6-s390",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "libc6-x32",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "locales",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "locales-all",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "multiarch-support",
            "binary_version": "2.23-0ubuntu11.2"
          },
          {
            "binary_name": "nscd",
            "binary_version": "2.23-0ubuntu11.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "glibc",
        "purl": "pkg:deb/ubuntu/glibc@2.23-0ubuntu11.2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.23-0ubuntu11.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.21-0ubuntu4",
        "2.21-0ubuntu5",
        "2.21-0ubuntu6",
        "2.23-0ubuntu1",
        "2.23-0ubuntu2",
        "2.23-0ubuntu3",
        "2.23-0ubuntu4",
        "2.23-0ubuntu5",
        "2.23-0ubuntu6",
        "2.23-0ubuntu7",
        "2.23-0ubuntu9",
        "2.23-0ubuntu10",
        "2.23-0ubuntu11"
      ]
    }
  ],
  "aliases": [],
  "details": "An integer overflow in the implementation of the posix_memalign in memalign functions in the GNU C Library (aka glibc or libc6) 2.26 and earlier could cause these functions to return a pointer to a heap area that is too small, potentially leading to heap corruption.",
  "id": "UBUNTU-CVE-2018-6485",
  "modified": "2026-04-22T07:38:34Z",
  "published": "2018-02-01T14:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-6485"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4218-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4416-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2018-6485"
    }
  ],
  "related": [
    "USN-4218-1",
    "USN-4416-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2018-6485"
  ]
}



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