X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/a991bd8d3e7fe02dbca0644054bab73c5b75324a..HEAD:/osfmk/kern/sync_sema.c

diff --git a/osfmk/kern/sync_sema.c b/osfmk/kern/sync_sema.c
index 31ea5caae..dfa8d1153 100644
--- a/osfmk/kern/sync_sema.c
+++ b/osfmk/kern/sync_sema.c
@@ -180,6 +180,12 @@ semaphore_create(
 	 *  the new semaphore to the task's semaphore list.
 	 */
 	task_lock(task);
+	/* Check for race with task_terminate */
+	if (!task->active) {
+		task_unlock(task);
+		zfree(semaphore_zone, s);
+		return KERN_INVALID_TASK;
+	}
 	enqueue_head(&task->semaphore_list, (queue_entry_t) s);
 	task->semaphores_owned++;
 	task_unlock(task);