+commit eff308af425b67093bab25f80f1ae950166bece1
+Author: Mark Adler <fork@madler.net>
+Date: Sat Jul 30 15:51:11 2022 -0700
+
+ Fix a bug when getting a gzip header extra field with inflate().
+
+ If the extra field was larger than the space the user provided with
+ inflateGetHeader(), and if multiple calls of inflate() delivered
+ the extra header data, then there could be a buffer overflow of the
+ provided space. This commit assures that provided space is not
+ exceeded.
+
+diff --git a/inflate.c b/inflate.c
+index 7be8c63..7a72897 100644
+--- a/inflate.c
++++ b/inflate.c
+@@ -763,9 +763,10 @@ int flush;
+ copy = state->length;
+ if (copy > have) copy = have;
+ if (copy) {
++ len = state->head->extra_len - state->length;
+ 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_max) {
+ zmemcpy(state->head->extra + len, next,
+ len + copy > state->head->extra_max ?
+ state->head->extra_max - len : copy);