On Tue Aug 8, 2023 at 10:31 PM EEST, Jo Van Bulck wrote:
> Ensure ctx is zero-initialized, such that the encl_measure function will
> not call EVP_MD_CTX_destroy with an uninitialized ctx pointer in case of an
> early error during key generation.
>
> Fixes: 2adcba79e69d ("selftests/x86: Add a selftest for SGX")
> Signed-off-by: Jo Van Bulck <jo.vanbulck@cs.kuleuven.be>
> ---
> tools/testing/selftests/sgx/sigstruct.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/tools/testing/selftests/sgx/sigstruct.c b/tools/testing/selftests/sgx/sigstruct.c
> index a07896a46364..d73b29becf5b 100644
> --- a/tools/testing/selftests/sgx/sigstruct.c
> +++ b/tools/testing/selftests/sgx/sigstruct.c
> @@ -318,9 +318,9 @@ bool encl_measure(struct encl *encl)
> struct sgx_sigstruct *sigstruct = &encl->sigstruct;
> struct sgx_sigstruct_payload payload;
> uint8_t digest[SHA256_DIGEST_LENGTH];
> + EVP_MD_CTX *ctx = NULL;
> unsigned int siglen;
> RSA *key = NULL;
> - EVP_MD_CTX *ctx;
> int i;
>
> memset(sigstruct, 0, sizeof(*sigstruct));
> @@ -384,7 +384,8 @@ bool encl_measure(struct encl *encl)
> return true;
>
> err:
> - EVP_MD_CTX_destroy(ctx);
> + if (ctx)
> + EVP_MD_CTX_destroy(ctx);
> RSA_free(key);
> return false;
> }
> --
> 2.34.1
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
BR, Jarkko