{
  "cveId": "CVE-2021-45931",
  "url": "https://patchblox.com/security/cve/CVE-2021-45931",
  "summary": "CVE-2021-45931 is fixed in 7 products on 1 platform, first by ALAS2023-2023-036, released February 17, 2023. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "harfbuzz: Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities:\nCVE-2021-45931:\n\tHarfBuzz...",
  "description": "Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities:\nCVE-2021-45931:\n\tHarfBuzz 2.9.0 has an out-of-bounds write in hb_bit_set_invertible_t::set (called from hb_sparseset_t\u003Chb_bit_set_invertible_t\u003E::set and hb_set_copy).",
  "published": "2023-02-17T20:44:00Z",
  "severity": "moderate",
  "epss": 0.01839,
  "epssPercentile": 0.79125,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "harfbuzz",
      "release": "amzn 2023",
      "fixedVersion": "2.9.1-1.amzn2023.0.3",
      "fix": "ALAS2023-2023-036",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-036",
      "released": "2023-02-17T20:44:00Z"
    },
    {
      "platform": "linux",
      "product": "harfbuzz-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "2.9.1-1.amzn2023.0.3",
      "fix": "ALAS2023-2023-036",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-036",
      "released": "2023-02-17T20:44:00Z"
    },
    {
      "platform": "linux",
      "product": "harfbuzz-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "2.9.1-1.amzn2023.0.3",
      "fix": "ALAS2023-2023-036",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-036",
      "released": "2023-02-17T20:44:00Z"
    },
    {
      "platform": "linux",
      "product": "harfbuzz-devel",
      "release": "amzn 2023",
      "fixedVersion": "2.9.1-1.amzn2023.0.3",
      "fix": "ALAS2023-2023-036",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-036",
      "released": "2023-02-17T20:44:00Z"
    },
    {
      "platform": "linux",
      "product": "harfbuzz-devel-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "2.9.1-1.amzn2023.0.3",
      "fix": "ALAS2023-2023-036",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-036",
      "released": "2023-02-17T20:44:00Z"
    },
    {
      "platform": "linux",
      "product": "harfbuzz-icu",
      "release": "amzn 2023",
      "fixedVersion": "2.9.1-1.amzn2023.0.3",
      "fix": "ALAS2023-2023-036",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-036",
      "released": "2023-02-17T20:44:00Z"
    },
    {
      "platform": "linux",
      "product": "harfbuzz-icu-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "2.9.1-1.amzn2023.0.3",
      "fix": "ALAS2023-2023-036",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-036",
      "released": "2023-02-17T20:44:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-10T01:44:33Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}