optee-os — security advisory

{
  "id": "5d443f72b5cd10aa11960a68d8c096b5eae3fc8fc54a7fb6984940a749c2b4b0",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-45702",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2026-45702",
    "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. Starting in version 4.3.0 and prior to version 4.11.0, a type confusion vulnerability exists in OP-TEE OS when processing an FFA_MEM_SHARE request from the normal world. This only applies when OP-TEE is configured as an SPMC for S-EL0 SPs, that is, with `CFG_CORE_SEL1_SPMC=y` and `CFG_SECURE_PARTITION=y`. Version 4.11.0 fixes the issue.",
    "evidence": "osv:UBUNTU-CVE-2026-45702",
    "products": [
      {
        "name": {
          "value": "optee-os",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "4.5.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.5.0-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.7.0-1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "optee-os",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "4.8.0-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "4.10.0-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "4.10.0-2",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "optee-os",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "4.7.0-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "4.8.0-1",
            "evidence": "/affected/2/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "UBUNTU-CVE-2026-45702",
      "aliases": [
        "UBUNTU-CVE-2026-45702"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"
        },
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "optee-os",
            "purl": "pkg:deb/ubuntu/optee-os?arch=source&distro=questing",
            "ecosystem": "Ubuntu:25.10"
          },
          "versions": [
            "4.5.0-1",
            "4.5.0-2",
            "4.7.0-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45702.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "optee-os",
                "binary_version": "4.7.0-1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "optee-os",
            "purl": "pkg:deb/ubuntu/optee-os?arch=source&distro=stonking",
            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "4.8.0-1",
            "4.10.0-1",
            "4.10.0-2"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45702.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "optee-os",
                "binary_version": "4.10.0-2"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "optee-os",
            "purl": "pkg:deb/ubuntu/optee-os?arch=source&distro=resolute",
            "ecosystem": "Ubuntu:26.04:LTS"
          },
          "versions": [
            "4.7.0-1",
            "4.8.0-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45702.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "optee-os",
                "binary_version": "4.8.0-1"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T12:58:22.794212399Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-45702"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2026-45702",
        "https://www.cve.org/CVERecord?id=CVE-2026-45702",
        "https://github.com/OP-TEE/optee_os/security/advisories/GHSA-86pj-8xgw-66p5"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-45702",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/1/score"
  },
  "source_id": "core-osv",
  "document_id": 358631,
  "published_at": "2026-06-03T19:16:00+00:00"
}