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authorJiri Slaby <jslaby@suse.cz>2011-02-28 10:34:06 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2011-03-23 13:16:45 -0700
commit691027e05a05ec4e64939c9099a47e30b9b23f54 (patch)
treeaf961961755665e2c6ea30263f8defa3ec720d41 /drivers
parent9390d630e93fd278b9838611ccd2074d61064762 (diff)
downloadlinux-linaro-stable-691027e05a05ec4e64939c9099a47e30b9b23f54.tar.gz
USB: serial/kobil_sct, fix potential tty NULL dereference
commit 6960f40a954619857e7095a6179eef896f297077 upstream. Make sure that we check the return value of tty_port_tty_get. Sometimes it may return NULL and we later dereference that. The only place here is in kobil_read_int_callback, so fix it. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/serial/kobil_sct.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c
index 9d99e682f96d..929ceb11179c 100644
--- a/drivers/usb/serial/kobil_sct.c
+++ b/drivers/usb/serial/kobil_sct.c
@@ -372,7 +372,7 @@ static void kobil_read_int_callback(struct urb *urb)
}
tty = tty_port_tty_get(&port->port);
- if (urb->actual_length) {
+ if (tty && urb->actual_length) {
/* BEGIN DEBUG */
/*