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Ran 27 Aug 2020 02:47AM UTC

Files 274

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Committed 27 Aug 2020 02:39AM UTC coverage: 98.019%. Remained the same

Job # MAKEOPTS="-j4"

Build Type

push

travis-ci-com

Committed by

dpgeorge

Commit Message

extmod/machine_i2c: Fix buffer overrun if 'addrsize' is bigger than 32.

The memory operation functions read_mem() and write_mem() create a
temporary buffer on the local C stack for the address bytes with the size
of 4 bytes.  This buffer is filled in a loop from the user supplied address
and address length.  If the user supplied 'addrsize' is bigger than 32, the
local buffer is overrun.

Fix this by raising an exception for invalid 'addrsize' values.

Signed-off-by: Michael Buesch <m@bues.ch>

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