From: Mark Adler <madler@alumni.caltech.edu>
Date: Thu, 30 Jun 2022 19:04:27 +0000 (-0700)
Subject: Fix inflateBack to detect invalid input with distances too far.
X-Git-Tag: 2.1.0-beta1~185
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=998fc886d63e3a2950cb8a857cc51c72610b29cc;p=thirdparty%2Fzlib-ng.git

Fix inflateBack to detect invalid input with distances too far.
---

diff --git a/infback.c b/infback.c
index 95798511f..200997c46 100644
--- a/infback.c
+++ b/infback.c
@@ -55,6 +55,7 @@ int32_t ZNG_CONDEXPORT PREFIX(inflateBackInit)(PREFIX3(stream) *strm, int32_t wi
     state->window = window;
     state->wnext = 0;
     state->whave = 0;
+    state->sane = 1;
     state->chunksize = functable.chunksize();
     return Z_OK;
 }