From cf37ee4de4647076273e19ca2b496df4d53f2c8f Mon Sep 17 00:00:00 2001
From: Runxi Yu
Date: Fri, 12 Jun 2026 18:31:28 +0000
Subject: internal/format/packfile/delta: Add MaxChainDepth

---
 internal/format/packfile/delta/apply.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/internal/format/packfile/delta/apply.go b/internal/format/packfile/delta/apply.go
index d0918839..4210d1b3 100644
--- a/internal/format/packfile/delta/apply.go
+++ b/internal/format/packfile/delta/apply.go
@@ -6,6 +6,11 @@ import (
 	"lindenii.org/go/lgo/intconv"
 )
 
+// MaxChainDepth is the maximum supported delta chain length.
+// Resolvers reject chains deeper than this
+// to bound recursion depth and reconstruction work.
+const MaxChainDepth = 1 << 12
+
 // Apply applies one inflated delta payload to base
 // and returns the reconstructed result.
 //
-- 
cgit v1.3.1-10-gc9f91