bcm2835-v4l2: Fix buffer overflow problem

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https://github.com/raspberrypi/linux/issues/1447
port_parameter_get() failed to account for the header
(u32 id and u32 size) in the size before memcpying
the response into the response buffer, so overrunning
the provided buffer by 8 bytes.

Account for those bytes, and also a belt-and-braces
check to ensure we never copy more than *value_size
bytes into value.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
Signed-off-by: Michael Zoran <mzoran@crowfest.net>
Tested-by: Michael Zoran <mzoran@crowfest.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Dave Stevenson 2017-03-14 08:10:40 -07:00 • committed by Greg Kroah-Hartman

parent ce95e3a9c5

commit f7d51372d7

1 changed files with 6 additions and 1 deletions

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7

drivers/staging/vc04_services/bcm2835-camera/mmal-vchiq.c

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