1 files changed, 10 insertions, 1 deletions

diff --git a/crypto/ansi_cprng.c b/crypto/ansi_cprng.c
index 0fac8ffc2fb7..74478061ac0c 100644
--- a/crypto/ansi_cprng.c
+++ b/crypto/ansi_cprng.c
@@ -338,7 +338,16 @@ static int cprng_init(struct crypto_tfm *tfm)
 
         spin_lock_init(&ctx->prng_lock);
 
-        return reset_prng_context(ctx, NULL, DEFAULT_PRNG_KSZ, NULL, NULL);
+        if (reset_prng_context(ctx, NULL, DEFAULT_PRNG_KSZ, NULL, NULL) < 0)
+                return -EINVAL;
+
+        /*
+         * after allocation, we should always force the user to reset
+         * so they don't inadvertently use the insecure default values
+         * without specifying them intentially
+         */
+        ctx->flags |= PRNG_NEED_RESET;
+        return 0;
 }
 
 static void cprng_exit(struct crypto_tfm *tfm)