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(parent: 3758a65) | 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)
committerDanny Wood <danwood76@gmail.com>
Tue, 29 Jan 2019 13:17:10 +0000 (13:17 +0000)
commit94e70d4583cf73762ca32b96f9647fdd72c59790
tree34d3ff19300f6de5a3a38f25e718af0c82fafcd5tree | snapshot (tar.gz zip)
parent3758a65d42edb5f245a571991734ffe7f165a2e7commit | 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: Willy Tarreau <w@1wt.eu>
drivers/i2c/i2c-dev.c diff | blob | blame | history