{
  "fix": "libx11-6 2:1.6.4-3ubuntu0.4\u002Besm2",
  "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libx11-6-2-1.6.4-3ubuntu0.4-esm2",
  "summary": "libx11-6 2:1.6.4-3ubuntu0.4\u002Besm2, released October 2, 2023, fixes 3 CVEs in libx11-6. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.",
  "platform": "linux",
  "type": "package",
  "title": "libx11-6 2:1.6.4-3ubuntu0.4\u002Besm2 for Ubuntu 18.04.6 LTS (bionic)",
  "released": "2023-10-02T17:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2023-43785, high severity",
  "supported": false,
  "cveCount": 3,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00669,
  "maxCvss": 7.8,
  "appliesTo": [
    {
      "product": "libx11-6",
      "productUrl": "https://patchblox.com/security/product/linux/libx11-6",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.6.4-3ubuntu0.4\u002Besm2",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2023-43785",
      "url": "https://patchblox.com/security/cve/CVE-2023-43785",
      "title": "libx11: A vulnerability was found in libX11 due to a boundary condition within the _XkbReadKeySyms() function",
      "priority": "High",
      "severity": "medium",
      "cvss": 7.8,
      "epss": 0.00669,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-43786",
      "url": "https://patchblox.com/security/cve/CVE-2023-43786",
      "title": "libx11: A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function",
      "priority": "High",
      "severity": "medium",
      "cvss": 7.8,
      "epss": 0.00475,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-43787",
      "url": "https://patchblox.com/security/cve/CVE-2023-43787",
      "title": "libx11: A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function",
      "priority": "High",
      "severity": "high",
      "cvss": 7.8,
      "epss": 0.00475,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-12T19:57:06Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}