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| author | Johan Hovold <jhovold@gmail.com> | 2011-03-22 11:12:10 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-03-27 11:36:23 -0700 |
| commit | c2bf2aa8c59305072aff51fbaa011079f9062c90 (patch) | |
| tree | 43dd57ded7361a75c0d90cf84e95791097ebec7d | |
| parent | 4f798939ccff5624f0d1976093e1282692687e8e (diff) | |
USB: cdc-acm: fix potential null-pointer dereference
commit 15e5bee33ffc11d0e5c6f819a65e7881c5c407be upstream.
Must check return value of tty_port_tty_get.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | 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 805916675fb..fcdd41e0429 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); } |