{
  "cveId": "CVE-2019-6706",
  "url": "https://patchblox.com/security/cve/CVE-2019-6706",
  "summary": "CVE-2019-6706 is fixed in 5 products on 1 platform, first by liblua5.3-0 5.3.3-1ubuntu0.18.04.1, released January 22, 2019. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Lua 5.3.5 has a use-after-free in lua_upvaluejoin in lapi.c. For example a crash outcome might be achieved by an attacker who is able to trigger a debug.upvaluejoin call in which the arguments have certain relationships.",
  "description": "The lua packages provide support for Lua, a powerful light-weight programming language designed for extending applications. Lua is also frequently used as a general-purpose, stand-alone language.\n\nSecurity Fix(es):\n\n* lua: use-after-free in lua_upvaluejoin in lapi.c resulting in denial of service (CVE-2019-6706)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 8.1 Release Notes linked from the References section.",
  "published": "2019-01-22T16:00:00Z",
  "severity": "Important",
  "cvss": 7.5,
  "cwe": "Use After Free",
  "epss": 0.1738,
  "epssPercentile": 0.97135,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-6706",
  "fixes": [
    {
      "platform": "linux",
      "product": "liblua5.3-0",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.3.3-1ubuntu0.18.04.1",
      "fix": "liblua5.3-0 5.3.3-1ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-liblua5.3-0-5.3.3-1ubuntu0.18.04.1",
      "released": "2019-01-22T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "lua",
      "release": "RHEL 8",
      "fixedVersion": "0:5.3.4-11.el8",
      "fix": "RHSA-2019:3706",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2019-3706",
      "released": "2019-11-05T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "lua",
      "release": "ol 8",
      "fixedVersion": "0:5.3.4-11.el8",
      "fix": "ELSA-2019-3706",
      "url": "https://patchblox.com/security/fix/linux/elsa-2019-3706",
      "released": "2019-11-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "lua-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:5.3.4-11.el8",
      "fix": "RHSA-2019:3706",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2019-3706",
      "released": "2019-11-05T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "lua-devel",
      "release": "ol 8",
      "fixedVersion": "0:5.3.4-11.el8",
      "fix": "ELSA-2019-3706",
      "url": "https://patchblox.com/security/fix/linux/elsa-2019-3706",
      "released": "2019-11-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "lua-libs",
      "release": "RHEL 8",
      "fixedVersion": "0:5.3.4-11.el8",
      "fix": "RHSA-2019:3706",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2019-3706",
      "released": "2019-11-05T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "lua-libs",
      "release": "ol 8",
      "fixedVersion": "0:5.3.4-11.el8",
      "fix": "ELSA-2019-3706",
      "url": "https://patchblox.com/security/fix/linux/elsa-2019-3706",
      "released": "2019-11-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "lua5.3",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.3.3-1ubuntu0.18.04.1",
      "fix": "lua5.3 5.3.3-1ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-lua5.3-5.3.3-1ubuntu0.18.04.1",
      "released": "2019-01-22T16:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}