17 lines
774 B
Diff
17 lines
774 B
Diff
diff --git a/zlib/inflate.c b/zlib/inflate.c
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index e43abd9..bd33c19 100644
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--- a/zlib/inflate.c
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+++ b/zlib/inflate.c
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@@ -740,8 +740,9 @@ int flush;
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if (copy > have) copy = have;
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if (copy) {
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if (state->head != Z_NULL &&
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- state->head->extra != Z_NULL) {
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- len = state->head->extra_len - state->length;
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+ state->head->extra != Z_NULL &&
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+ (len = state->head->extra_len - state->length) <
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+ state->head->extra_max) {
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zmemcpy(state->head->extra + len, next,
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len + copy > state->head->extra_max ?
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state->head->extra_max - len : copy);
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