Check number of log fields in MongoDB exporter. (#2451)

grafana · Jan 20, 2025 · 4af278c · 4af278c
1 parent adf80db
commit 4af278c
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/internal/static/integrations/logruskit.go b/internal/static/integrations/logruskit.go
@@ -51,6 +51,12 @@ func (o output) Write(data []byte) (n int, err error) {
 	}
 	sort.Strings(keys)
 
+	// Protecting against a potential integer overflow as reported by GitHub CodeQL.
+	// The number of fields is expected to be well below this limit.
+	if fieldLen := len(ll.Data); fieldLen > 100000 {
+		return 0, fmt.Errorf("too many fields: %d", fieldLen)
+	}
+
 	vals := make([]interface{}, 0, 2*len(ll.Data)+2)
 	for _, k := range keys {
 		vals = append(vals, k, ll.Data[k])