From 805c1c1977bc6e748a053f04a13c124b11d66936 Mon Sep 17 00:00:00 2001
From: orbisai0security <mediratta01.pally@gmail.com>
Date: Thu, 14 May 2026 06:57:49 +0000
Subject: [PATCH] fix: V-001 security vulnerability

Automated security fix generated by Orbis Security AI
---
 src/ngx_stream_lua_log_ringbuf.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/ngx_stream_lua_log_ringbuf.c b/src/ngx_stream_lua_log_ringbuf.c
index bcdc6389..17569e59 100644
--- a/src/ngx_stream_lua_log_ringbuf.c
+++ b/src/ngx_stream_lua_log_ringbuf.c
@@ -104,6 +104,9 @@ ngx_stream_lua_log_ringbuf_append(ngx_stream_lua_log_ringbuf_t *rb,
     head->time = tp->sec + tp->msec / 1000.0L;
 
     rb->tail += HEADER_LEN;
+    if ((size_t)(rb->data + rb->size - rb->tail) < (size_t) n) {
+        return;
+    }
     ngx_memcpy(rb->tail, buf, n);
     rb->tail += n;
     rb->count++;