Fix inflateBack to detect invalid input with distances too far.

diff --git a/infback.c b/infback.c
index 62369396ffd07921bd585d1433897d0a73a1a6bd..81cd09b206e9ab7c5d4ffd94a169eaa22fb6a19f 100644 (file)
--- a/infback.c
+++ b/infback.c
@@ -51,6 +51,7 @@ int32_t Z_EXPORT PREFIX(inflateBackInit_)(PREFIX3(stream) *strm, int32_t windowB
     state->window = window;
     state->wnext = 0;
     state->whave = 0;
+    state->sane = 1;
     state->chunksize = functable.chunksize();
     return Z_OK;
 }