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platform driver: fix use-after-free in platform_device_del() 

In platform_device_del(), the device is still used after a call to
device_del(). At this point there is no guarantee that the device is
still there and there could be a use-after-free access. Move the
call to device_remove_properties() before device_del() to fix that.

Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jerome Marchand 2016-07-25 16:13:32 +02:00 committed by Greg Kroah-Hartman
parent bea5b158ff
commit c90aab9c96
1 changed files with 1 additions and 2 deletions
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3
drivers/base/platform.c
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@ -434,6 +434,7 @@ void platform_device_del(struct platform_device *pdev)
int i;
if (pdev) {
device_remove_properties(&pdev->dev);
device_del(&pdev->dev);
if (pdev->id_auto) {
@ -446,8 +447,6 @@ void platform_device_del(struct platform_device *pdev)
if (r->parent)
release_resource(r);
}
device_remove_properties(&pdev->dev);
}
}
EXPORT_SYMBOL_GPL(platform_device_del);