{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "4.3.0"
                  },
                  {
                    "fixed": "4.11.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              }
            ]
          },
          "events": [
            {
              "introduced": "1c0d52ace3c237ca6276cafb5c73f699a75c1d40"
            },
            {
              "fixed": "f54190f22611dd5ad5d22546fd4209aa100f56bd"
            }
          ],
          "repo": "https://github.com/op-tee/optee_os",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-86pj-8xgw-66p5"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-843"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45702.json"
  },
  "details": "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.",
  "id": "CVE-2026-45702",
  "modified": "2026-10-21T02:30:42.353556806Z",
  "published": "2026-06-03T17:55:18.331Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45702.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/OP-TEE/optee_os/security/advisories/GHSA-86pj-8xgw-66p5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45702"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OP-TEE has FF-A type confusion in SPMC tmem path that causes S-EL1 kernel panic"
}