usbip: fix stub_send_ret_submit() vulnerability to null transfer_buffer

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commit be6123df1e upstream.

stub_send_ret_submit() handles urb with a potential null transfer_buffer,
when it replays a packet with potential malicious data that could contain
a null buffer. Add a check for the condition when actual_length > 0 and
transfer_buffer is null.

Reported-by: Secunia Research <vuln@secunia.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Shuah Khan 2017-12-07 14:16:50 -07:00 • committed by Greg Kroah-Hartman

parent b6a2ad646c

commit d78a5506cf

1 changed files with 7 additions and 0 deletions

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drivers/usb/usbip/stub_tx.c

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