optee-os — security advisory

{
  "id": "5d7451c00818591d4ee2914d63d8745b961cb236043c718cee5b3a29f51a80c1",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-33317",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-33317",
    "summary": "OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. In versions 3.13.0 through 4.10.0, missing checks in `entry_get_attribute_value()` in `ta/pkcs11/src/object.c` can lead to out-of-bounds read from the PKCS#11 TA heap or a crash. When chained with the OOB read, the PKCS#11 TA function `PKCS11_CMD_GET_ATTRIBUTE_VALUE` or `entry_get_attribute_value()` can, with a bad template parameter, be tricked into reading at most 7 bytes beyond the end of the template buffer and writing beyond the end of the template buffer with the content of an attribute value of a PKCS#11 object. Commits e031c4e562023fd9f199e39fd2e85797e4cbdca9, 16926d5a46934c46e6656246b4fc18385a246900, and 149e8d7ecc4ef8bb00ab4a37fd2ccede6d79e1ca contain patches and are anticipated to be part of version 4.11.0.",
    "evidence": "osv:DEBIAN-CVE-2026-33317",
    "products": [
      {
        "name": {
          "value": "optee-os",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "4.10.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.10.0-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.5.0-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.7.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.8.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.9.0-1",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2026-33317",
      "aliases": [
        "DEBIAN-CVE-2026-33317"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "optee-os",
            "purl": "pkg:deb/debian/optee-os?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "versions": [
            "4.10.0-1",
            "4.10.0-2",
            "4.5.0-2",
            "4.7.0-1",
            "4.8.0-1",
            "4.9.0-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33317.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-27T09:47:33.295972594Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-33317"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-33317"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-33317",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 460871,
  "published_at": "2026-04-24T03:16:11.02+00:00"
}