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Clear cfg_client if the client is destroyed to prevent UAF found by Ilya

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Grigoriev.
This commit is contained in:
nicm
2026-07-17 08:13:23 +00:00
committed by tmux update bot
parent 1d0d22df22
commit d5b1f3ad89
1 changed files with 3 additions and 1 deletions
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4
server-client.c
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@@ -1,4 +1,4 @@
/* $OpenBSD: server-client.c,v 1.494 2026/07/15 14:14:50 nicm Exp $ */
/* $OpenBSD: server-client.c,v 1.495 2026/07/17 08:13:23 nicm Exp $ */
/*
* Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -502,6 +502,8 @@ server_client_lost(struct client *c)
struct client_file *cf, *cf1;
struct client_window *cw, *cw1;
if (cfg_client == c)
cfg_client = NULL;
c->flags |= CLIENT_DEAD;
server_client_clear_overlay(c);