{
  "cveId": "CVE-2026-41565",
  "url": "https://patchblox.com/security/cve/CVE-2026-41565",
  "summary": "CVE-2026-41565 is fixed in 5 products on 1 platform, first by FEDORA-2026-2EF4C0C642, released May 29, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "libcryptx-perl: CryptX versions before 0.088_001 for Perl have a stack buffer overflow in four AEAD decrypt_verify helpers",
  "description": "CryptX versions before 0.088_001 for Perl have a stack buffer overflow in four AEAD decrypt_verify helpers.  The gcm_decrypt_verify, ccm_decrypt_verify, chacha20poly1305_decrypt_verify and eax_decrypt_verify XS routines copied the caller-supplied authentication tag into a fixed 144-byte stack buffer (MAXBLOCKSIZE) without checking the supplied length. A longer tag overwrites the stack past the buffer. Version 0.088 added the clamp to gcm_decrypt_verify, and 0.088_001 added it to the other three.  Any caller of an affected helper that forwards an attacker-controlled tag longer than the buffer can trigger the overflow.",
  "published": "2026-05-28T16:16:22Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00469,
  "epssPercentile": 0.40828,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libcryptx-perl",
      "release": "Debian 14",
      "fixedVersion": "0.089-1",
      "fix": "DEBIAN-CVE-2026-41565",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-41565",
      "released": "2026-06-24T14:07:24Z"
    },
    {
      "platform": "linux",
      "product": "perl-CryptX",
      "release": "Fedora 43",
      "fixedVersion": "0.089-1.fc43",
      "fix": "FEDORA-2026-2EF4C0C642",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-2ef4c0c642",
      "released": "2026-05-29T10:58:18Z"
    },
    {
      "platform": "linux",
      "product": "perl-CryptX",
      "release": "amzn 2023",
      "fixedVersion": "0.088-2.amzn2023.0.3",
      "fix": "ALAS2023-2026-1834",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1834",
      "released": "2026-06-11T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-CryptX",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "0.89.0-bp160.1.1",
      "fix": "OPENSUSE-SU-2026:20936-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20936-1",
      "released": "2026-06-10T11:48:58Z"
    },
    {
      "platform": "linux",
      "product": "perl-CryptX-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "0.089-1.fc43",
      "fix": "FEDORA-2026-2EF4C0C642",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-2ef4c0c642",
      "released": "2026-05-29T10:58:18Z"
    },
    {
      "platform": "linux",
      "product": "perl-CryptX-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "0.088-2.amzn2023.0.3",
      "fix": "ALAS2023-2026-1834",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1834",
      "released": "2026-06-11T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-CryptX-debugsource",
      "release": "Fedora 43",
      "fixedVersion": "0.089-1.fc43",
      "fix": "FEDORA-2026-2EF4C0C642",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-2ef4c0c642",
      "released": "2026-05-29T10:58:18Z"
    },
    {
      "platform": "linux",
      "product": "perl-CryptX-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "0.088-2.amzn2023.0.3",
      "fix": "ALAS2023-2026-1834",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1834",
      "released": "2026-06-11T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-CryptX-tests",
      "release": "Fedora 43",
      "fixedVersion": "0.089-1.fc43",
      "fix": "FEDORA-2026-2EF4C0C642",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-2ef4c0c642",
      "released": "2026-05-29T10:58:18Z"
    },
    {
      "platform": "linux",
      "product": "perl-CryptX-tests",
      "release": "amzn 2023",
      "fixedVersion": "0.088-2.amzn2023.0.3",
      "fix": "ALAS2023-2026-1834",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1834",
      "released": "2026-06-11T09:00:00Z"
    }
  ],
  "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"
  }
}