On Tue, Sep 01, 2020 at 05:25:12PM +0100, Sean Young wrote: > Greg, > > On Tue, Sep 01, 2020 at 05:09:31PM +0200, Greg Kroah-Hartman wrote: > > From: Jia-Ju Bai <baijiaju@xxxxxxxxxxxxxxx> > > > > [ Upstream commit 6499a0db9b0f1e903d52f8244eacc1d4be00eea2 ] > > > > The value av7110->debi_virt is stored in DMA memory, and it is assigned > > to data, and thus data[0] can be modified at any time by malicious > > hardware. In this case, "if (data[0] < 2)" can be passed, but then > > data[0] can be changed into a large number, which may cause buffer > > overflow when the code "av7110->ci_slot[data[0]]" is used. > > > > To fix this possible bug, data[0] is assigned to a local variable, which > > replaces the use of data[0]. > > See the discussion here: > > https://lkml.org/lkml/2020/8/31/479 > > It does not seem worthwhile merging to the stable trees. It doesn't hurt either :) thanks, greg k-h
