diff options
| -rw-r--r-- | lib/zlib/inflate.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/zlib/inflate.c b/lib/zlib/inflate.c index 30dfe155995..8f767b7b9d2 100644 --- a/lib/zlib/inflate.c +++ b/lib/zlib/inflate.c @@ -455,8 +455,9 @@ int ZEXPORT inflate(z_streamp strm, int flush) if (copy > have) copy = have; if (copy) { if (state->head != Z_NULL && - state->head->extra != Z_NULL) { - len = state->head->extra_len - state->length; + state->head->extra != Z_NULL && + (len = state->head->extra_len - state->length) < + state->head->extra_max) { zmemcpy(state->head->extra + len, next, len + copy > state->head->extra_max ? state->head->extra_max - len : copy); |