CVE-2023-41325

CVSS V2 None CVSS V3 None
Description
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.
Overview
  • CVE ID
  • CVE-2023-41325
  • Assigner
  • GitHub_M
  • Vulnerability Status
  • PUBLISHED
  • Published Version
  • 2023-09-15T19:40:58.065Z
  • Last Modified Date
  • 2023-09-15T19:40:58.065Z
History
Created Old Value New Value Data Type Notes
2024-06-25 03:33:24 Added to TrackCVE