Messages in this thread | | | Subject | Re: [PATCH] clk: samsung: Suppress unbinding to prevent theoretical attacks | From | Javier Martinez Canillas <> | Date | Fri, 20 May 2016 22:30:30 -0400 |
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Hello Krzysztof,
On 05/17/2016 03:26 AM, Krzysztof Kozlowski wrote: > Although unbinding a driver requires root privileges but it still might > be used theoretically in certain attacks (by triggering NULL pointer > exception or memory corruption if driver does not provide proper remove > callbacks or core does not handle it). > > Samsung clock drivers are essential for system operation so their > removal is not expected. More over, the Exynos3250 ISP clock driver does > not implement remove() driver callback and it is not buildable as > modules. > > Suppress the unbind interface for Exynos3250 ISP and S3C2410 DCLK clock > drivers. > > Suggested-by: Marek Szyprowski <m.szyprowski@samsung.com> > Cc: Marek Szyprowski <m.szyprowski@samsung.com> > Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> > ---
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Best regards, -- Javier Martinez Canillas Open Source Group Samsung Research America
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