commit: 98c35534420d3147553bd3071a5fc63cd56de5b1 From: =?UTF-8?q?Lothar=20Wa=C3=9Fmann?= <[email protected]> Date: Thu, 22 Nov 2012 10:11:25 +0100 Subject: USB: chipidea: fix use after free bug MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit
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]> Cc: stable <[email protected]> # 3.6 Acked-by: Alexander Shishkin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/usb/chipidea/core.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 5a4a5eca..aebf695 100644 --- 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); -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
