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-rw-r--r--ext/openssl/ossl.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/ext/openssl/ossl.c b/ext/openssl/ossl.c
index f86a3eee27..e052a2ce09 100644
--- a/ext/openssl/ossl.c
+++ b/ext/openssl/ossl.c
@@ -480,9 +480,13 @@ static unsigned long ossl_thread_id(void)
static void Init_ossl_locks(void)
{
int i;
+ int num_locks = CRYPTO_num_locks();
- ossl_locks = (VALUE*) OPENSSL_malloc(CRYPTO_num_locks() * sizeof(VALUE));
- for (i = 0; i < CRYPTO_num_locks(); i++) {
+ if ((unsigned)num_locks >= INT_MAX / (int)sizeof(VALUE)) {
+ rb_raise(rb_eRuntimeError, "CRYPTO_num_locks() is too big: %d", num_locks);
+ }
+ ossl_locks = (VALUE*) OPENSSL_malloc(num_locks * (int)sizeof(VALUE));
+ for (i = 0; i < num_locks; i++) {
ossl_locks[i] = rb_mutex_new();
rb_global_variable(&(ossl_locks[i]));
}