From 4a1b934cfaca01dc27e4d0b89a55470b6404a703 Mon Sep 17 00:00:00 2001
From: BSdrop <bsdrop@tuta.io>
Date: Thu, 14 May 2026 13:08:29 +0000
Subject: [PATCH] Potential fix for code scanning alert no. 4: Size computation
 for allocation may overflow

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
---
 internal/scraper/modified.go | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/internal/scraper/modified.go b/internal/scraper/modified.go
index 9f52f4d..66dc2ac 100644
--- a/internal/scraper/modified.go
+++ b/internal/scraper/modified.go
@@ -55,8 +55,16 @@ func buildModifiedEvents(path string, newData []byte, kind, scopeKind string, sc
 	}
 	oldMap := mapRawByID(oldPage.Results)
 
-	ids := make([]int64, 0, len(oldMap)+len(newMap))
-	seen := make(map[int64]struct{}, len(oldMap)+len(newMap))
+	oldLen := len(oldMap)
+	newLen := len(newMap)
+	maxInt := int(^uint(0) >> 1)
+	if oldLen > maxInt-newLen {
+		return nil, fmt.Errorf("too many tracked items")
+	}
+	total := oldLen + newLen
+
+	ids := make([]int64, 0, total)
+	seen := make(map[int64]struct{}, total)
 	for id := range oldMap {
 		seen[id] = struct{}{}
 		ids = append(ids, id)