From: Antonio Quartulli Date: Fri, 23 May 2025 09:38:41 +0200 Subject: dco_linux: avoid bogus text when netlink message is not parsed References: bsc#1239783 Git-repo: https://github.com/OpenVPN/openvpn.git Git-commit: 4a48841da2d4179a96348994f841661ec9e5ce1d Patch-mainline: v2.7.0 We may bail out parsing an incoming DCO message because it may concern a different interface. In that case we print the following debug messages: dco_do_read ovpn-dco: ignoring message (type=5) for foreign ifindex 313 process_incoming_dco: received message of type 0 - ignoring However, the last message is confusing, because there is no message of type 0 being received, but the message_type was simply not initialized. Bail out parsing earlier and avoid printing any bogus text. Change-Id: I568faa12a5960e8b69de23c2df413b70b231592c Signed-off-by: Antonio Quartulli Acked-by: Gert Doering Message-Id: <20250523073848.20848-1-gert@greenie.muc.de> URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg31763.html Signed-off-by: Gert Doering Signed-off-by: Jiri Slaby --- src/openvpn/forward.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/openvpn/forward.c b/src/openvpn/forward.c index 022afdb929a3..a83b2582e7ac 100644 --- a/src/openvpn/forward.c +++ b/src/openvpn/forward.c @@ -1251,6 +1251,12 @@ process_incoming_dco(struct context *c) dco_do_read(dco); + /* no message for us to handle - platform specific code has logged details */ + if (dco->dco_message_type == 0) + { + return; + } + /* FreeBSD currently sends us removal notifcation with the old peer-id in * p2p mode with the ping timeout reason, so ignore that one to not shoot * ourselves in the foot and removing the just established session */ -- 2.49.0