From: Hangyu Hua <hbh25y@gmail.com>
To: gregkh@linuxfoundation.org
Cc: stable@vger.kernel.org, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org, ben@decadent.org.uk,
balbi@kernel.org, axboe@kernel.dk, mingo@kernel.org,
jj251510319013@gmail.com, zsm@chromium.org,
stern@rowland.harvard.edu, Hangyu Hua <hbh25y@gmail.com>
Subject: [PATCH 4.14 0/2] usb: gadget: use after free in dev_config
Date: Tue, 1 Mar 2022 10:26:06 +0800 [thread overview]
Message-ID: <20220301022608.10950-1-hbh25y@gmail.com> (raw)
Author: Hangyu Hua <hbh25y@gmail.com>
commit 89f3594d0de5 ("usb: gadget: don't release an existing dev->buf")
Author: Hangyu Hua <hbh25y@gmail.com>
commit 501e38a5531e ("usb: gadget: clear related members when goto fail")
Add two commits to all stable branches.
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.
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 | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
--
2.25.1
next reply other threads:[~2022-03-01 2:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-01 2:26 Hangyu Hua [this message]
2022-03-01 2:26 ` [PATCH 4.14 1/2] usb: gadget: don't release an existing dev->buf Hangyu Hua
2022-03-01 2:26 ` [PATCH 4.14 2/2] usb: gadget: clear related members when goto fail Hangyu Hua
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