Skip to content
Commit 427694cf authored by Krishna Kurapati's avatar Krishna Kurapati Committed by Greg Kroah-Hartman
Browse files

usb: gadget: ncm: Handle decoding of multiple NTB's in unwrap call



When NCM is used with hosts like Windows PC, it is observed that there are
multiple NTB's contained in one usb request giveback. Since the driver
unwraps the obtained request data assuming only one NTB is present, we
loose the subsequent NTB's present resulting in data loss.

Fix this by checking the parsed block length with the obtained data
length in usb request and continue parsing after the last byte of current
NTB.

Cc: stable@vger.kernel.org
Fixes: 9f6ce424 ("usb: gadget: f_ncm.c added")
Signed-off-by: default avatarKrishna Kurapati <quic_kriskura@quicinc.com>
Reviewed-by: default avatarMaciej Żenczykowski <maze@google.com>
Link: https://lore.kernel.org/r/20230927105858.12950-1-quic_kriskura@quicinc.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 33d7e372
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment