From: Hangyu Hua <hbh25y@gmail.com>
To: balbi@kernel.org, gregkh@linuxfoundation.org, axboe@kernel.dk,
stern@rowland.harvard.edu, jj251510319013@gmail.com,
dan.carpenter@oracle.com
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
Hangyu Hua <hbh25y@gmail.com>
Subject: [PATCH v2 0/2] usb: gadget: use after free in dev_config
Date: Thu, 30 Dec 2021 12:38:13 +0800 [thread overview]
Message-ID: <20211230043815.18899-1-hbh25y@gmail.com> (raw)
There are two bugs:
dev->buf does not need to be released if it already exists before
executing dev_config.
dev->config and dev->hs_config and dev->dev need to be cleaned if
dev_config fails to avoid UAF.
v2:
1. break one patch up into two separate patches.
2. use "fail:" to clear all members.
Hangyu Hua (2):
usb: gadget: don't release an existing dev->buf
usb: gadget: clear related members when goto fail
drivers/usb/gadget/legacy/inode.c | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
--
2.25.1
next reply other threads:[~2021-12-30 4:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-30 4:38 Hangyu Hua [this message]
2021-12-30 4:38 ` [PATCH v2 1/2] usb: gadget: don't release an existing dev->buf Hangyu Hua
2021-12-30 11:03 ` Greg KH
2021-12-31 1:44 ` Hangyu Hua
2021-12-30 4:38 ` [PATCH v2 2/2] usb: gadget: clear related members when goto fail Hangyu Hua
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