This is a note to let you know that I've just added the patch titled
USB: serial: fix potential use-after-free after failed probe
to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.
If you have any questions about this process, please let me know.
>From 07fdfc5e9f1c966be8722e8fa927e5ea140df5ce Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@xxxxxxxxxx>
Date: Wed, 18 Feb 2015 10:34:50 +0700
Subject: USB: serial: fix potential use-after-free after failed probe
Fix return value in probe error path, which could end up returning
success (0) on errors. This could in turn lead to use-after-free or
double free (e.g. in port_remove) when the port device is removed.
Fixes: c706ebdfc895 ("USB: usb-serial: call port_probe and port_remove
at the right times")
Cc: stable <stable@xxxxxxxxxxxxxxx> # v2.6.31
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Acked-by: Greg Kroah-Hartman <greg@xxxxxxxxx>
---
drivers/usb/serial/bus.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/serial/bus.c b/drivers/usb/serial/bus.c
index 9374bd2aba20..5d8d86666b90 100644
--- a/drivers/usb/serial/bus.c
+++ b/drivers/usb/serial/bus.c
@@ -75,7 +75,7 @@ static int usb_serial_device_probe(struct device *dev)
retval = device_create_file(dev, &dev_attr_port_number);
if (retval) {
if (driver->port_remove)
- retval = driver->port_remove(port);
+ driver->port_remove(port);
goto exit_with_autopm;
}
--
2.3.1
--
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