11cb0ef41Sopenharmony_cidiff --git a/third_party/zlib/deflate.c b/third_party/zlib/deflate.c
21cb0ef41Sopenharmony_ciindex a39e62787862..c6053fd1c7ea 100644
31cb0ef41Sopenharmony_ci--- a/third_party/zlib/deflate.c
41cb0ef41Sopenharmony_ci+++ b/third_party/zlib/deflate.c
51cb0ef41Sopenharmony_ci@@ -318,6 +318,10 @@ int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
61cb0ef41Sopenharmony_ci                                  s->w_size + window_padding,
71cb0ef41Sopenharmony_ci                                  2*sizeof(Byte));
81cb0ef41Sopenharmony_ci     s->prev   = (Posf *)  ZALLOC(strm, s->w_size, sizeof(Pos));
91cb0ef41Sopenharmony_ci+    /* Avoid use of uninitialized value, see:
101cb0ef41Sopenharmony_ci+     * https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11360
111cb0ef41Sopenharmony_ci+     */
121cb0ef41Sopenharmony_ci+    zmemzero(s->prev, s->w_size * sizeof(Pos));
131cb0ef41Sopenharmony_ci     s->head   = (Posf *)  ZALLOC(strm, s->hash_size, sizeof(Pos));
141cb0ef41Sopenharmony_ci 
151cb0ef41Sopenharmony_ci     s->high_water = 0;      /* nothing written to s->window yet */
16