From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 555372F12DF; Wed, 5 Nov 2025 09:02:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762333333; cv=none; b=K4iMziAtQuvVqKy801gwrR7ATi1JvbfhJz7eyiu/hGQYKIgwwArROwxfBtBeOBSw8lc9x0ymkMDf4r8WMBThcpnJ9ABDclMLbHnFNOmAUKuQfHwg5QkMkPGE8qO0xbZq3muYOBOABoxvfIQEYomBPUuJVHtWOfNsoMFagIbRNHw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762333333; c=relaxed/simple; bh=69P8E0lzJ/6R8ErkBsHZbv0lFG3IxBCu8QrGpXLxM1I=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=OBDdcvdTcf0O48pxErpQfY6akl3DExKU9XH8RxIhIHhBNsrojQbLHijdVcORVB4fETFEJjqoypZ5W9lNLEHGAz0KMdfL7XylwFdJrUCX65eV9g6FiruSqT8tpI5zXap2eRyxB54Pif/gS2DjLI4T25owrU0qjqs4+EXCLJdKc5A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LWgBAFoJ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LWgBAFoJ" Received: by smtp.kernel.org (Postfix) with ESMTPS id D0FCAC4CEF8; Wed, 5 Nov 2025 09:02:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762333332; bh=69P8E0lzJ/6R8ErkBsHZbv0lFG3IxBCu8QrGpXLxM1I=; h=From:Date:Subject:To:Cc:Reply-To:From; b=LWgBAFoJ+EQPWyyG1QATcvY+YKPg6OpdDwXrt6boMeQQlBqKkJdQuw7tuZ8Bj1mzs 3OkQ2WJLbXNj9EOy1FnZRedmPQbFoTR9I55q2agm/G+IBU2AhtKIgKaXjRCAW1Hpiq wTSkJMkE/YSzFQ+bG90cg94JSCowwUgeGTS36SVoXv+x4QYUb6xCGCvY5GTfjO0tXy Y+fgNzfx7+D+Ss9oONsjdS0MUCFv/COqnVhj+JI3Yf5cxIJMAi1/CB253dPcMnc/6V tK4tt5gHU7Abp12dVrGJZGLZO9O/E660Fj+RABBZ9R777O3t+Y2/2Dl9VtnpcJffhT 1V3SEEgCtowjw== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id C469FCCFA07; Wed, 5 Nov 2025 09:02:12 +0000 (UTC) From: Yang Li via B4 Relay Date: Wed, 05 Nov 2025 17:02:06 +0800 Subject: [PATCH] Bluetooth: iso: Fix UAF on iso_sock_disconn Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251105-kernel_panic-v1-1-88637054c6b9@amlogic.com> X-B4-Tracking: v=1; b=H4sIAI0SC2kC/x3MQQqAIBBA0avIrBM0E6OrRIToVENhohCBePek5 Vv8XyBjIswwsQIJH8p0hwbZMXCHDTty8s3Qi15LKTQ/MQW81mgDOW6U9c4INYzCQ0tiwo3efzc vtX43iwIZXgAAAA== To: Marcel Holtmann , Johan Hedberg , Luiz Augusto von Dentz Cc: linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, Yang Li X-Mailer: b4 0.13-dev-f0463 X-Developer-Signature: v=1; a=ed25519-sha256; t=1762333331; l=1549; i=yang.li@amlogic.com; s=20240418; h=from:subject:message-id; bh=S5BJh2ba2g9xJCkHYB8Rff1jMpJFLarygQDk7qfhCww=; b=0Es3hP455AD3QZnhIIAzJALsD1uJ+obbNHtlx9EHEvCMso1TC5723gpPHqHVWkrPn+X5+uRtK 4cb2LTUXq+wBZHpUwMkaPne7ZL6T6dmNLUZnP66TvfICrPwaP8/jMfA X-Developer-Key: i=yang.li@amlogic.com; a=ed25519; pk=86OaNWMr3XECW9HGNhkJ4HdR2eYA5SEAegQ3td2UCCs= X-Endpoint-Received: by B4 Relay for yang.li@amlogic.com/20240418 with auth_id=180 X-Original-From: Yang Li Reply-To: yang.li@amlogic.com From: Yang Li kernel panic: Unable to handle kernel read from unreadable memory at virtual address 00000000000003d8 Call trace: iso_sock_disconn+0x110/0x1c8 __iso_sock_close+0x50/0x164 iso_sock_release+0x48/0xf0 __sock_release+0x40/0xb4 sock_close+0x18/0x28 __fput+0xd8/0x28c __fput_sync+0x50/0x5c __arm64_sys_close+0x38/0x7c invoke_syscall+0x48/0x118 el0_svc_common.constprop.0+0x40/0xe0 do_el0_svc_compat+0x1c/0x34 el0_svc_compat+0x30/0x88 el0t_32_sync_handler+0x90/0x140 el0t_32_sync+0x198/0x19c Signed-off-by: Yang Li --- net/bluetooth/iso.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/bluetooth/iso.c b/net/bluetooth/iso.c index 74ec7d125c88..89c7700ceb81 100644 --- a/net/bluetooth/iso.c +++ b/net/bluetooth/iso.c @@ -838,14 +838,14 @@ static void __iso_sock_close(struct sock *sk) case BT_CONNECT: case BT_CONNECTED: case BT_CONFIG: - if (iso_pi(sk)->conn->hcon) + if (iso_pi(sk)->conn && iso_pi(sk)->conn->hcon) iso_sock_disconn(sk); else iso_chan_del(sk, ECONNRESET); break; case BT_CONNECT2: - if (iso_pi(sk)->conn->hcon && + if (iso_pi(sk)->conn && iso_pi(sk)->conn->hcon && (test_bit(HCI_CONN_PA_SYNC, &iso_pi(sk)->conn->hcon->flags) || test_bit(HCI_CONN_PA_SYNC_FAILED, &iso_pi(sk)->conn->hcon->flags))) iso_sock_disconn(sk); --- base-commit: 2747d929617743ecba08eeeb310283b4be681383 change-id: 20251105-kernel_panic-73adc703480d Best regards, -- Yang Li