From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
To: Valentina Manea <valentina.manea.m@gmail.com>,
Shuah Khan <shuah@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
linux-usb@vger.kernel.org,
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Subject: [PATCH v4 08/12] usb: usbip: check that stream socket is used
Date: Fri, 5 Mar 2021 00:24:51 +0900 [thread overview]
Message-ID: <20210304152455.3685-9-penguin-kernel@I-love.SAKURA.ne.jp> (raw)
In-Reply-To: <20210304152455.3685-1-penguin-kernel@I-love.SAKURA.ne.jp>
Add SOCK_STREAM check into usbip_prepare_threads(), for current code is
not verifying that a file descriptor passed is actually a stream socket.
If the file descriptor passed was a SOCK_DGRAM socket, sock_recvmsg()
can't detect end of stream.
Tested-by: syzbot <syzbot+a93fba6d384346a761e3@syzkaller.appspotmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
---
drivers/usb/usbip/usbip_common.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/usb/usbip/usbip_common.c b/drivers/usb/usbip/usbip_common.c
index 9f677c5a74e8..f80098c3dd10 100644
--- a/drivers/usb/usbip/usbip_common.c
+++ b/drivers/usb/usbip/usbip_common.c
@@ -762,6 +762,11 @@ int usbip_prepare_threads(struct usbip_thread_info *uti,
socket = sockfd_lookup(sockfd, &err);
if (!socket)
return -EINVAL;
+ /* Verify that this is a stream socket. */
+ if (socket->type != SOCK_STREAM) {
+ err = -EINVAL;
+ goto out_socket;
+ }
/* Create threads for this socket. */
rx = kthread_create(rx_fn, ud, rx_name);
if (IS_ERR(rx)) {
--
2.18.4
next prev parent reply other threads:[~2021-03-04 15:27 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <000000000000647eff05b3f7e0d4@google.com>
2020-11-13 10:49 ` general protection fault in tomoyo_socket_sendmsg_permission Tetsuo Handa
2021-02-19 0:33 ` [PATCH] usb: usbip: serialize attach/detach operations Tetsuo Handa
2021-02-19 9:47 ` [PATCH (repost)] " Tetsuo Handa
2021-02-19 15:08 ` [PATCH v2] " Tetsuo Handa
2021-02-19 15:53 ` Greg Kroah-Hartman
2021-02-19 16:00 ` Shuah Khan
2021-02-20 1:10 ` Tetsuo Handa
2021-02-20 6:58 ` Greg Kroah-Hartman
2021-02-20 9:51 ` Tetsuo Handa
2021-02-22 15:34 ` Shuah Khan
2021-02-23 1:51 ` Tetsuo Handa
2021-02-23 1:59 ` [PATCH v3] " Tetsuo Handa
2021-02-26 0:00 ` Shuah Khan
2021-02-26 0:10 ` Tetsuo Handa
2021-02-26 15:04 ` Shuah Khan
2021-03-04 15:24 ` [PATCH v4 00/12] " Tetsuo Handa
2021-03-04 15:24 ` [PATCH v4 01/12] usb: usbip: introduce usbip_event_mutex for serialization Tetsuo Handa
2021-03-04 15:24 ` [PATCH v4 02/12] usb: usbip: vhci: serialize attach_store()/detach_store() against event_handler() Tetsuo Handa
2021-03-04 15:24 ` [PATCH v4 03/12] usb: usbip: vudc: serialize usbip_sockfd_store() " Tetsuo Handa
2021-03-04 15:24 ` [PATCH v4 04/12] usb: usbip: stub: " Tetsuo Handa
2021-03-04 15:24 ` [PATCH v4 05/12] usb: usbip: don't reset tcp_socket at vhci_device_reset() Tetsuo Handa
2021-03-04 15:24 ` [PATCH v4 06/12] usb: usbip: fix error handling of kthread_get_run() Tetsuo Handa
2021-03-04 15:24 ` [PATCH v4 07/12] usb: usbip: preallocate kernel threads for consistent attach operation Tetsuo Handa
2021-03-04 15:24 ` Tetsuo Handa [this message]
2021-03-04 15:24 ` [PATCH v4 09/12] usb: usbip: vhci: add automatic recovery to attach_store() Tetsuo Handa
2021-03-04 15:24 ` [PATCH v4 10/12] usb: usbip: vudc: add automatic recovery to usbip_sockfd_store() Tetsuo Handa
2021-03-04 15:24 ` [PATCH v4 11/12] usb: usbip: stub: " Tetsuo Handa
2021-03-04 15:24 ` [PATCH v4 12/12] usb: usbip: remove unused kthread_get_run() Tetsuo Handa
2021-03-04 15:52 ` [PATCH v4 00/12] usb: usbip: serialize attach/detach operations Shuah Khan
2021-03-05 10:06 ` Tetsuo Handa
2021-03-05 14:44 ` Shuah Khan
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