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diff --git a/modules/lua/lua_request.c b/modules/lua/lua_request.c
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index 77a88b4..1d8be2e 100644
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--- a/modules/lua/lua_request.c
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+++ b/modules/lua/lua_request.c
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@@ -376,6 +376,7 @@ static int req_parsebody(lua_State *L)
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             if (end == NULL) break;
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             key = (char *) apr_pcalloc(r->pool, 256);
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             filename = (char *) apr_pcalloc(r->pool, 256);
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+            if (end - crlf <= 8) break;
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             vlen = end - crlf - 8;
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             buffer = (char *) apr_pcalloc(r->pool, vlen+1);
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             memcpy(buffer, crlf + 4, vlen);