On Thu, 21 Mar 2019 00:42:01 +0100, Gustavo A. R. Silva wrote: > > dev is indirectly controlled by user-space, hence leading to > a potential exploitation of the Spectre variant 1 vulnerability. > > This issue was detected with the help of Smatch: > > sound/core/seq/oss/seq_oss_synth.c:626 snd_seq_oss_synth_make_info() warn: > potential spectre issue 'dp->synths' [w] (local cap) > > Fix this by sanitizing dev before using it to index dp->synths. > > Notice that given that speculation windows are large, the policy is > to kill the speculation on the first load and not worry if it can be > completed with a dependent load/store [1]. > > [1] https://lore.kernel.org/lkml/20180423164740.gy17...@dhcp22.suse.cz/ > > Cc: sta...@vger.kernel.org > Signed-off-by: Gustavo A. R. Silva <gust...@embeddedor.com>
Applied, thanks. Takashi
