From ed8f1d31a7cd32e9b4112933f2dd8ebf99224c1a Mon Sep 17 00:00:00 2001
From: hamza <hamza.kesraoui@tu-dortmund.de>
Date: Wed, 21 May 2025 14:10:38 +0200
Subject: [PATCH] - fixed buffers size

---
 drivers/sst/sst_chrdev.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/sst/sst_chrdev.c b/drivers/sst/sst_chrdev.c
index 3b8c8aec9d2f..995b030bbf7e 100644
--- a/drivers/sst/sst_chrdev.c
+++ b/drivers/sst/sst_chrdev.c
@@ -33,7 +33,8 @@ static ssize_t universe_read(struct file *file, char __user *buf, size_t count,
 	}
 	len = strlen(answer);
 	sst_debug("About to copy %lu bytes of your answer at 0x%lx to the userspace\n", len, (uintptr_t)answer);
-	if (copy_to_user(buf, answer, len)) {
+	size_t toCopy = min(count, len);
+	if (copy_to_user(buf, answer, toCopy)) {
 		pr_err("User copy failed!\n");
 		kfree(answer);
 		return -EFAULT;