[iptables PATCH 09/13] extensions: ecn: Sanitize xlate callback

[Phil Sutter <phil@xxxxxx>]

Catch unexpected values in einfo->ip_ect.

Fixes: ca42442093d3d ("iptables: extensions: libxt_ecn: Add translation to nft")
Signed-off-by: Phil Sutter <phil@xxxxxx>
---
 extensions/libxt_ecn.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/extensions/libxt_ecn.c b/extensions/libxt_ecn.c
index ad3c7a0307a0d..83a4acfab7da7 100644
--- a/extensions/libxt_ecn.c
+++ b/extensions/libxt_ecn.c
@@ -156,6 +156,8 @@ static int ecn_xlate(struct xt_xlate *xl,
 		case 3:
 			xt_xlate_add(xl, "ce");
 			break;
+		default:
+			return 0;
 		}
 	}
 	return 1;
-- 
2.38.0