CVE-2023-41325

{
  "id": "CVE-2023-41325",
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              "automatable": "no"
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            {
              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2024-09-25T18:48:57.951686Z"
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          "baseScore": 7.4,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.8,
        "exploitabilityScore": 1.1
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          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
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      "affectedData": [
        {
          "vendor": "OP-TEE",
          "product": "optee_os",
          "versions": [
            {
              "status": "affected",
              "version": ">= 3.20, < 3.22"
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  "published": "2023-09-15T20:15:10.800",
  "references": [
    {
      "url": "https://github.com/OP-TEE/optee_os/commit/e2ec831cb07ed0099535c7c140cb6338aa62816a",
      "tags": [
        "Patch"
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    {
      "url": "https://github.com/OP-TEE/optee_os/security/advisories/GHSA-jrw7-63cq-7vhm",
      "tags": [
        "Exploit",
        "Vendor Advisory"
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    {
      "url": "https://github.com/OP-TEE/optee_os/commit/e2ec831cb07ed0099535c7c140cb6338aa62816a",
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  "vulnStatus": "Modified",
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      "type": "Secondary",
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      "description": [
        {
          "lang": "en",
          "value": "CWE-415"
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  "descriptions": [
    {
      "lang": "en",
      "value": "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 3.20 and prior to version 3.22, `shdr_verify_signature` can make a double free. `shdr_verify_signature` used to verify a TA binary before it is loaded. To verify a signature of it, allocate a memory for RSA key. RSA key allocate function (`sw_crypto_acipher_alloc_rsa_public_key`) will try to allocate a memory (which is optee’s heap memory). RSA key is consist of exponent and modulus (represent as variable `e`, `n`) and it allocation is not atomic way, so it may succeed in `e` but fail in `n`. In this case sw_crypto_acipher_alloc_rsa_public_key` will free on `e` and return as it is failed but variable ‘e’ is remained as already freed memory address . `shdr_verify_signature` will free again that memory (which is `e`) even it is freed when it failed allocate RSA key. A patch is available in version 3.22. No known workarounds are available."
    },
    {
      "lang": "es",
      "value": "OP-TEE es un Entorno de Ejecución Confiable (TEE) diseñado como complemento de un kernel de Linux no seguro que se ejecuta en Arm; Núcleos Cortex-A que utilizan la tecnología TrustZone. A partir de la versión 3.20 y anteriores a la versión 3.22, `shdr_verify_signature` puede hacer un doble libremente. `shdr_verify_signature` se usa para verificar un binario TA antes de cargarlo. Para verificar una firma del mismo, asigne una memoria para la clave RSA. La función de asignación de clave RSA (`sw_crypto_acipher_alloc_rsa_public_key`) intentará asignar una memoria (que es la memoria del montón del candidato). La clave RSA consta de exponente y módulo (representados como variables `e`, `n`) y su asignación no es de forma atómica, por lo que puede tener éxito en `e` pero fallar en `n`. En este caso, sw_crypto_acipher_alloc_rsa_public_key` se liberará en `e` y regresará cuando falló, pero la variable “e” permanece como dirección de memoria ya liberada. `shdr_verify_signature` liberará nuevamente esa memoria (que es `e`), incluso si se libera cuando no se pudo asignar la clave RSA. Hay un parche disponible en la versión 3.22. No hay workarounds conocidos disponibles."
    }
  ],
  "lastModified": "2026-06-17T06:21:47.243",
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