This is a note to let you know that I've just added the patch titled
USB: cdc-acm: fix potential null-pointer dereference
to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6.git
in the usb-linus branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will hopefully also will be merged in Linus's tree for the
next -rc kernel release.
If you have any questions about this process, please let me know.
>From 15e5bee33ffc11d0e5c6f819a65e7881c5c407be Mon Sep 17 00:00:00 2001
From: Johan Hovold <[email protected]>
Date: Tue, 22 Mar 2011 11:12:10 +0100
Subject: USB: cdc-acm: fix potential null-pointer dereference
Must check return value of tty_port_tty_get.
Cc: stable <[email protected]>
Signed-off-by: Johan Hovold <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/usb/class/cdc-acm.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 00d809d..1756371 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -533,6 +533,8 @@ static void acm_softint(struct work_struct *work)
if (!ACM_READY(acm))
return;
tty = tty_port_tty_get(&acm->port);
+ if (!tty)
+ return;
tty_wakeup(tty);
tty_kref_put(tty);
}
--
1.7.4.1
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