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USB: cdc-acm: fix potential null-pointer dereference on disconnect
authorJohan Hovold <jhovold@gmail.com>
Tue, 22 Mar 2011 10:12:11 +0000 (11:12 +0100)
committerGreg Kroah-Hartman <gregkh@suse.de>
Wed, 23 Mar 2011 20:22:02 +0000 (13:22 -0700)
commit7e7797e7f6f7bfab73fca02c65e40eaa5bb9000c
tree3e34252eeb70e4480953a3282ae3e137efc42418tree | snapshot
parent15e5bee33ffc11d0e5c6f819a65e7881c5c407becommit | diff
USB: cdc-acm: fix potential null-pointer dereference on disconnect

Fix potential null-pointer exception on disconnect introduced by commit
11ea859d64b69a747d6b060b9ed1520eab1161fe (USB: additional power savings
for cdc-acm devices that support remote wakeup).

Only access acm->dev after making sure it is non-null in control urb
completion handler.

Cc: stable <stable@kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/class/cdc-acm.c diff | blob | history
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