From 9ef5cc03f1e452d2328fb126eb7a25d4f01be1dd Mon Sep 17 00:00:00 2001 From: Andri Yngvason Date: Mon, 28 Dec 2020 21:36:12 +0000 Subject: [PATCH] input/seat: Reset command handler context in seat_destroy() This fixes a dangling reference which causes a use-after-free. --- sway/input/seat.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sway/input/seat.c b/sway/input/seat.c index dbb69ba0..1f5865ee 100644 --- a/sway/input/seat.c +++ b/sway/input/seat.c @@ -15,6 +15,7 @@ #include "config.h" #include "list.h" #include "log.h" +#include "sway/config.h" #include "sway/desktop.h" #include "sway/input/cursor.h" #include "sway/input/input-manager.h" @@ -53,6 +54,9 @@ static void seat_node_destroy(struct sway_seat_node *seat_node) { } void seat_destroy(struct sway_seat *seat) { + if (seat == config->handler_context.seat) { + config->handler_context.seat = input_manager_get_default_seat(); + } struct sway_seat_device *seat_device, *next; wl_list_for_each_safe(seat_device, next, &seat->devices, link) { seat_device_destroy(seat_device);