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(parent: 93c94ec) | patch
i2c: fix kernel memory disclosure in dev interface
authorVlad Tsyrklevich <vlad@tsyrklevich.net>
Mon, 9 Jan 2017 15:53:36 +0000 (22:53 +0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 19 Jan 2017 19:18:02 +0000 (20:18 +0100)
commitab8957396a692d46a357aec8ff57abc9bd5a878a
tree9f6cd882038171f8f9e07602907e56867dee14a9tree | snapshot
parent93c94ec23faeea8d9a501b6188c701fc282672b1commit | diff
i2c: fix kernel memory disclosure in dev interface

commit 30f939feaeee23e21391cfc7b484f012eb189c3c upstream.

i2c_smbus_xfer() does not always fill an entire block, allowing
kernel stack memory disclosure through the temp variable. Clear
it before it's read to.

Signed-off-by: Vlad Tsyrklevich <vlad@tsyrklevich.net>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/i2c/i2c-dev.c diff | blob | history