diff options
| -rw-r--r-- | source/pdf/pdf-stream.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/source/pdf/pdf-stream.c b/source/pdf/pdf-stream.c index e2696bd1..15014b38 100644 --- a/source/pdf/pdf-stream.c +++ b/source/pdf/pdf-stream.c @@ -66,9 +66,10 @@ pdf_load_jbig2_globals(fz_context *ctx, pdf_document *doc, pdf_obj *dict) fz_var(buf); if ((globals = pdf_find_item(ctx, fz_drop_jbig2_globals_imp, dict)) != NULL) - { return globals; - } + + if (pdf_mark_obj(ctx, dict)) + fz_throw(ctx, FZ_ERROR_GENERIC, "cyclic reference when loading JBIG2 globals"); fz_try(ctx) { @@ -79,6 +80,7 @@ pdf_load_jbig2_globals(fz_context *ctx, pdf_document *doc, pdf_obj *dict) fz_always(ctx) { fz_drop_buffer(ctx, buf); + pdf_unmark_obj(ctx, dict); } fz_catch(ctx) { |