linux/drivers/i2c/i2c-dev.c
Vlad Tsyrklevich ab8957396a i2c: fix kernel memory disclosure in dev interface
commit 30f939feae 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>
2017-01-19 20:18:02 +01:00

673 lines
18 KiB