USN-8707-1 (UBUNTU-CVE-2026-22791)

Vulnerability from osv_ubuntu – Published: 2026-08-31 15:49 – Updated: 2026-08-31 15:49 – Source website
VLAI
Summary
opencryptoki vulnerabilities
Details

It was discovered that primitive decoders in openCryptoki produced integer underflows when the encoded length was zero. An attacker could possibly use this issue to trigger out-of-bounds reads. (CVE-2026-40253)

It was discovered that openCryptoki incorrectly handled symlinks. An attacker in the token-group could possibly use this issue to achieve privilege escalation or access sensitive information. (CVE-2026-23893)

It was discovered that the CKM_ECDH_AES_KEY_WRAP implementation had a heap buffer overflow vulnerability. An attacker could possibly use this issue to trigger heap corruption, or denial-of-service. (CVE-2026-22791)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-22791",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-23893",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-40253",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:26.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libopencryptoki0",
            "binary_version": "3.26.0+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "opencryptoki",
            "binary_version": "3.26.0+dfsg-0ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "opencryptoki",
        "purl": "pkg:deb/ubuntu/opencryptoki@3.26.0+dfsg-0ubuntu1.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.26.0+dfsg-0ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.25.0+dfsg-0ubuntu1",
        "3.26.0+dfsg-0ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that primitive decoders in openCryptoki produced integer\nunderflows when the encoded length was zero. An attacker could possibly use\nthis issue to trigger out-of-bounds reads. (CVE-2026-40253)\n\nIt was discovered that openCryptoki incorrectly handled symlinks. An\nattacker in the token-group could possibly use this issue to achieve\nprivilege escalation or access sensitive information. (CVE-2026-23893)\n\nIt was discovered that the CKM_ECDH_AES_KEY_WRAP implementation had a heap\nbuffer overflow vulnerability. An attacker could possibly use this issue to\ntrigger heap corruption, or denial-of-service. (CVE-2026-22791)",
  "id": "USN-8707-1",
  "modified": "2026-08-31T15:49:17Z",
  "published": "2026-08-31T15:49:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8707-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-22791"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-23893"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-40253"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "opencryptoki vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-22791",
    "UBUNTU-CVE-2026-23893",
    "UBUNTU-CVE-2026-40253"
  ]
}



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