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| author | Johan Hovold <jhovold@gmail.com> | 2011-03-22 11:12:10 +0100 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2011-06-26 12:47:12 -0400 |
| commit | c698c35db2a98a62e985640251610a03d6989dc3 (patch) | |
| tree | 08135ffa74109a89f72718b2e110e907c400b146 | |
| parent | 6966865f64cfcab87a1fd096b4a30c22a0f09900 (diff) | |
| download | linux-rt-c698c35db2a98a62e985640251610a03d6989dc3.tar.gz | |
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>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
| -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 073a9ef9fe60..af5ed89ca98c 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); } |