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Wed, 05 Aug 2026 22:37:09 -0700 (PDT) From: Jeffin Philip To: gregkh@linuxfoundation.org Cc: i@zenithal.me, jeffinphilip14@gmail.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, shuah@kernel.org, stable@vger.kernel.org, syzbot+af76b01c9a0f0ab60fb0@syzkaller.appspotmail.com, valentina.manea.m@gmail.com Subject: Re: [PATCH] usbip: usbip_host: Fix null pointer dereference in rebind_store Date: Thu, 6 Aug 2026 11:06:51 +0530 Message-ID: <20260806053651.25088-1-jeffinphilip14@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <2026080602-estrogen-dry-f499@gregkh> References: <2026080602-estrogen-dry-f499@gregkh> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Thu, Aug 06 2026, Greg KH wrote: >What prevents bid->udev from becoming NULL right after you checked this? We could use usb_get_dev() and hold a reference to udev when the busid_lock is being held and then release it after do_rebind, or would that be incorrect? >How was this tested? The method to reproduce it is in the same thread. Thanks, Jeffin.