6.6-stable review patch. If anyone has any objections, please let me know.
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From: Jo Van Bulck jo.vanbulck@cs.kuleuven.be
[ Upstream commit 79eba8c924f7decfa71ddf187d38cb9f5f2cd7b3 ]
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 Signed-off-by: Dave Hansen dave.hansen@linux.intel.com Reviewed-by: Jarkko Sakkinen jarkko@kernel.org Acked-by: Kai Huang kai.huang@intel.com Link: https://lore.kernel.org/all/20231005153854.25566-2-jo.vanbulck%40cs.kuleuven... Signed-off-by: Sasha Levin sashal@kernel.org --- 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; }