From 96e48c91b4105bfab2e60084e9dcf0797752ccd0 Mon Sep 17 00:00:00 2001 From: Bjarki Arge Andreasen Date: Thu, 15 Feb 2024 06:44:29 +0100 Subject: [PATCH] modem: cmux: Prevent NULL deref in connect_response_transmit Prevent potential NULL dereference identified by CID 338026 Signed-off-by: Bjarki Arge Andreasen --- subsys/modem/modem_cmux.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/subsys/modem/modem_cmux.c b/subsys/modem/modem_cmux.c index 16dc60b7219..a6235e891c1 100644 --- a/subsys/modem/modem_cmux.c +++ b/subsys/modem/modem_cmux.c @@ -455,6 +455,10 @@ static void modem_cmux_on_control_frame_uih(struct modem_cmux *cmux) static void modem_cmux_connect_response_transmit(struct modem_cmux *cmux) { + if (cmux == NULL) { + return; + } + struct modem_cmux_frame frame = { .dlci_address = cmux->frame.dlci_address, .cr = cmux->frame.cr,