From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 974EFC61D99 for ; Thu, 23 Nov 2023 01:14:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231979AbjKWBOj (ORCPT ); Wed, 22 Nov 2023 20:14:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50378 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231430AbjKWBOh (ORCPT ); Wed, 22 Nov 2023 20:14:37 -0500 Received: from mail-pg1-f200.google.com (mail-pg1-f200.google.com [209.85.215.200]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6C777110 for ; Wed, 22 Nov 2023 17:14:44 -0800 (PST) Received: by mail-pg1-f200.google.com with SMTP id 41be03b00d2f7-5c1f17f0198so335976a12.1 for ; Wed, 22 Nov 2023 17:14:44 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700702084; x=1701306884; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=HXh9W9O+Mjaeo+XurpSXoauMKBLLtCqmM40Dz+c/UW8=; b=C73cPZ914Sz1WnqsFyO5y9ACY1GD5YYY5pqcr/yjz1s4L8q2/9w73N9SL6ggrpzr9+ aICbftcKkXJ0LvxKHW5FpYl+QkCOghXK0WFz0eyGoZ4XnHvLw/WC4Ioqw7daAwM1PL6D ej0r1FS8gtKoR1dKU28RDzD7QfiLhSOrdplwW7Azd0WjiLLxVVE+GWK+X2ZZsZ2e/CbA Da4W1WQuKFyPKg0MtyR70qee7G5qUKUIqSmlc9nzBtkTfU2uc8kl7pCI0sOxxrkehtFc 9qi/I+2O02GIHVBFxTeHrUBodbmzVD54lvG4KFmP6T09jzp46iHB71OeBq5cKl49+9uY rfIQ== X-Gm-Message-State: AOJu0YwI2pLUMFDejE7ldQDlv8VSsgNIClHkXoMEUv7MIRZCb6IjcA0Z 9liNSwB6UHPGJiWkyW4qt3xu+syYnUDrvy2XPREvpm2qVYhAfvk= X-Google-Smtp-Source: AGHT+IFgu5oKhYKILDf1X+7MEsuI2il6UVdcl4X4MH307qrpcDV5szxG7SScBF9pyFfE0j/28nCS2W1Euh/L+YiG09ruN79UF+2X MIME-Version: 1.0 X-Received: by 2002:a63:d84c:0:b0:5bd:d60d:f60e with SMTP id k12-20020a63d84c000000b005bdd60df60emr744493pgj.8.1700702083979; Wed, 22 Nov 2023 17:14:43 -0800 (PST) Date: Wed, 22 Nov 2023 17:14:43 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000095a19e060ac78ff3@google.com> Subject: [syzbot] [bluetooth?] KASAN: slab-use-after-free Read in __lock_sock From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: [bluetooth?] KASAN: slab-use-after-free Read in __lock_sock Author: eadavis@qq.com please test uaf in __lock_sock #syz test https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git 8de1e7afcc1c diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index c736186aba26..692727831dde 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -443,6 +443,7 @@ static void __sco_sock_close(struct sock *sk) sco_conn_lock(sco_pi(sk)->conn); hci_conn_drop(sco_pi(sk)->conn->hcon); sco_pi(sk)->conn->hcon = NULL; + sco_pi(sk)->conn->sk = NULL; sco_conn_unlock(sco_pi(sk)->conn); } else sco_chan_del(sk, ECONNRESET);