{
  "cveId": "CVE-2021-22945",
  "url": "https://patchblox.com/security/cve/CVE-2021-22945",
  "summary": "CVE-2021-22945 is fixed in 4 products on 1 platform, first by curl 7.74.0-1.3ubuntu2, released September 14, 2021. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "curl: When sending data to an MQTT server, libcurl \u0026lt;= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a p...",
  "description": "When sending data to an MQTT server, libcurl \u0026lt;= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a pointer to an already freed memory area and both use that again in a subsequent call to send data and also free it *again*.",
  "published": "2021-09-14T17:00:00Z",
  "severity": "Medium",
  "epss": 0.06677,
  "epssPercentile": 0.93939,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "curl",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "7.74.0-1.3ubuntu2",
      "fix": "curl 7.74.0-1.3ubuntu2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-curl-7.74.0-1.3ubuntu2",
      "released": "2021-09-14T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libcurl3-gnutls",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "7.74.0-1.3ubuntu2",
      "fix": "libcurl3-gnutls 7.74.0-1.3ubuntu2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libcurl3-gnutls-7.74.0-1.3ubuntu2",
      "released": "2021-09-14T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libcurl3-nss",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "7.74.0-1.3ubuntu2",
      "fix": "libcurl3-nss 7.74.0-1.3ubuntu2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libcurl3-nss-7.74.0-1.3ubuntu2",
      "released": "2021-09-14T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libcurl4",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "7.74.0-1.3ubuntu2",
      "fix": "libcurl4 7.74.0-1.3ubuntu2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libcurl4-7.74.0-1.3ubuntu2",
      "released": "2021-09-14T17:00:00Z"
    }
  ],
  "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"
  }
}