linux-kernel - Re: [syzbot] [PATCH] Test for aea6bf908d73

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Date:   Thu, 09 Nov 2023 06:14:18 -0800
From:   syzbot <syzbot+bbe84a4010eeea00982d@...kaller.appspotmail.com>
To:     linux-kernel@...r.kernel.org
Subject: Re: [syzbot] [PATCH] Test for aea6bf908d73

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Subject: [PATCH] Test for aea6bf908d73
Author: eadavis@...com

please test uaf in nfc_alloc_send_skb

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git aea6bf908d73

diff --git a/net/nfc/llcp_core.c b/net/nfc/llcp_core.c
index 1dac28136e6a..4959163d8dc5 100644
--- a/net/nfc/llcp_core.c
+++ b/net/nfc/llcp_core.c
@@ -113,6 +113,7 @@ static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool device,
 		bh_unlock_sock(sk);
 
 		sk_del_node_init(sk);
+		llcp_sock->local = NULL;
 	}
 
 	write_unlock(&local->sockets.lock);
-- 
2.25.1