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| author | Johan Hovold <jhovold@gmail.com> | 2011-03-22 11:12:10 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-03-28 07:31:22 -0700 |
| commit | 0530c26f6cd6991fe56e37101fb440d9953309af (patch) | |
| tree | 3b442f680ca277afd5072d00a18bcc7601b97ad3 | |
| parent | e9f4fcfaa4de566650a8837ff0d722a1f6876417 (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 2b26ff81b59..9872610de26 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -534,6 +534,8 @@ 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); } |