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| author | Johan Hovold <jhovold@gmail.com> | 2011-03-22 10:12:10 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-03-23 20:21:59 (GMT) |
| commit | 15e5bee33ffc11d0e5c6f819a65e7881c5c407be (patch) | |
| tree | 364c0fa67bc8684ee7d329762ef870738ec0f91a /drivers/usb/class/cdc-acm.c | |
| parent | 23b80550e2aa61d0ba3af98b831b9195be0db9ee (diff) | |
| download | linux-fsl-qoriq-15e5bee33ffc11d0e5c6f819a65e7881c5c407be.tar.xz | |
USB: cdc-acm: fix potential null-pointer dereference
Must check return value of tty_port_tty_get.
Cc: stable <stable@kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
| -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 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); } |