diff --git a/scheduler/job.c b/scheduler/job.c
index 85c4d0462..5a6aedc33 100644
--- a/scheduler/job.c
+++ b/scheduler/job.c
@@ -700,6 +700,28 @@ cupsdContinueJob(cupsd_job_t *job)	/* I - Job */
     cupsRWUnlock(&MimeLock);
   }
 
+  /*
+   * Deep-copy the borrowed mime_filter_t pointers before dropping the
+   * lock: create_local_bg_thread() may concurrently call
+   * cupsdSetPrinterAttrs() -> delete_printer_filters() ->
+   * mimeDeleteFilter(), which free()s these objects while we are still
+   * holding raw pointers in 'filters'.
+   */
+  if (filters)
+  {
+    cups_array_t *owned = cupsArrayNew3(NULL, NULL, NULL, 0, NULL,
+                                        (cups_afree_func_t)free);
+    for (filter = (mime_filter_t *)cupsArrayFirst(filters);
+         filter;
+         filter = (mime_filter_t *)cupsArrayNext(filters))
+    {
+      mime_filter_t *copy = calloc(1, sizeof(mime_filter_t));
+      if (copy) { *copy = *filter; cupsArrayAdd(owned, copy); }
+    }
+    cupsArrayDelete(filters);
+    filters = owned;
+  }
+
  /*
   * Set a minimum cost of 100 for all jobs so that FilterLimit
   * works with raw queues and other low-cost paths.