Merge pull request #10 from FarisZR/alert-autofix-1

Fix potential overflow in size computation for allocation

Author: FarisZR

internal/journald/journald.go

@@ -2,6 +2,8 @@ package journald
 
 import (
 	"errors"
+	"fmt"
+	"math"
 	"sync/atomic"
 	"syscall"
 )
@@ -49,6 +51,10 @@ func Emit(eventType, message string, priority Priority, fields Fields) error {
 		return nil
 	}
 
+	if len(fields) > math.MaxInt-3 {
+		return fmt.Errorf("too many fields in journald entry: %d > %d", len(fields), math.MaxInt-3)
+	}
+
 	payload := make(Fields, len(fields)+3)
 	for k, v := range fields {
 		payload[k] = v