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Message-Id: <20240905225030.2026-1-hdanton@sina.com> Date: Fri, 6 Sep 2024 06:50:30 +0800 From: Hillf Danton <hdanton@...a.com> To: syzbot <syzbot+8811381d455e3e9ec788@...kaller.appspotmail.com> Cc: linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com Subject: Re: [syzbot] [net?] KASAN: slab-use-after-free Read in unix_stream_read_actor (2) On Wed, 04 Sep 2024 08:13:24 -0700 > syzbot found the following issue on: > > HEAD commit: fbdaffe41adc Merge branch 'am-qt2025-phy-rust' > git tree: net-next > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16d3fc53980000 #syz test --- x/net/unix/af_unix.c +++ y/net/unix/af_unix.c @@ -2634,6 +2634,7 @@ static int unix_stream_recv_urg(struct u if (!(state->flags & MSG_PEEK)) WRITE_ONCE(u->oob_skb, NULL); + __skb_unlink(oob_skb, &sk->sk_receive_queue); spin_unlock(&sk->sk_receive_queue.lock); unix_state_unlock(sk); --
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