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(parent: cd5ddd1) | 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)
committerBen Hutchings <ben@decadent.org.uk>
Thu, 16 Mar 2017 02:18:44 +0000 (02:18 +0000)
commit4829b2f4eba6394081a1c98e18be8e4f3ebaba44
tree022430948a8fcd3a16944dd82ef084725345d4fctree | snapshot
parentcd5ddd182cd1c02b115536df7b0a2a47ca0ffcd4commit | 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: Ben Hutchings <ben@decadent.org.uk>
drivers/i2c/i2c-dev.c diff | blob | history
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