This is a note to let you know that I've just added the patch titled
USB: chipidea: fix use after free bug
to the 3.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-chipidea-fix-use-after-free-bug.patch
and it can be found in the queue-3.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 98c35534420d3147553bd3071a5fc63cd56de5b1 Mon Sep 17 00:00:00 2001
From: Lothar WaÃmann <[email protected]>
Date: Thu, 22 Nov 2012 10:11:25 +0100
Subject: USB: chipidea: fix use after free bug
From: Lothar WaÃmann <[email protected]>
commit 98c35534420d3147553bd3071a5fc63cd56de5b1 upstream.
The pointer to a platform_device struct must not be dereferenced after
the device has been unregistered.
This bug produces a crash when unloading the ci13xxx kernel module
compiled with CONFIG_PAGE_POISONING enabled.
Signed-off-by: Lothar WaÃmann <[email protected]>
Acked-by: Alexander Shishkin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/usb/chipidea/core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -385,8 +385,9 @@ EXPORT_SYMBOL_GPL(ci13xxx_add_device);
void ci13xxx_remove_device(struct platform_device *pdev)
{
+ int id = pdev->id;
platform_device_unregister(pdev);
- ida_simple_remove(&ci_ida, pdev->id);
+ ida_simple_remove(&ci_ida, id);
}
EXPORT_SYMBOL_GPL(ci13xxx_remove_device);
Patches currently in stable-queue which might be from [email protected]
are
queue-3.7/usb-chipidea-fix-use-after-free-bug.patch
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