Dongliang Mu b8bbae3236 usb: idmouse: fix an uninit-value in idmouse_open ...

[ Upstream commit bce2b05399 ]

In idmouse_create_image, if any ftip_command fails, it will
go to the reset label. However, this leads to the data in
bulk_in_buffer[HEADER..IMGSIZE] uninitialized. And the check
for valid image incurs an uninitialized dereference.

Fix this by moving the check before reset label since this
check only be valid if the data after bulk_in_buffer[HEADER]
has concrete data.

Note that this is found by KMSAN, so only kernel compilation
is tested.

Reported-by: syzbot+79832d33eb89fb3cd092@syzkaller.appspotmail.com
Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
Link: https://lore.kernel.org/r/20220922134847.1101921-1-dzm91@hust.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2022-10-26 13:25:54 +02:00

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sisusbvga

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adutux.c

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apple-mfi-fastcharge.c

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appledisplay.c

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chaoskey.c

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cypress_cy7c63.c

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cytherm.c

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ehset.c

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emi26.c

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emi62.c

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ezusb.c

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ftdi-elan.c

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idmouse.c

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iowarrior.c

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isight_firmware.c

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Kconfig

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ldusb.c

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legousbtower.c

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lvstest.c

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Makefile

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trancevibrator.c

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usb251xb.c

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usb3503.c

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usb4604.c

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usb_u132.h

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usblcd.c

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usbsevseg.c

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usbtest.c

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uss720.c

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yurex.c

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