CVE-2023-41325 – OP-TEE double free in shdr_verify_signature

https://notcve.org/view.php?id=CVE-2023-41325

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). • https://github.com/OP-TEE/optee_os/commit/e2ec831cb07ed0099535c7c140cb6338aa62816a https://github.com/OP-TEE/optee_os/security/advisories/GHSA-jrw7-63cq-7vhm • CWE-415: Double Free •