In the Linux kernel, the following vulnerability has been resolved:

iio: gyro: itg3200: fix i2c read into the wrong stack location

itg3200_read_all_channels() takes `__be16 *buf' as a parameter and
fills the i2c_msg destination as `(char *)&buf'. Since `buf' is the
parameter (a pointer), `&buf' is the address of the local pointer
slot on the stack of itg3200_read_all_channels(), not the address
of the caller's scan buffer. The (char *) cast hides the type
mismatch.

i2c_transfer() therefore writes ITG3200_SCAN_ELEMENTS * sizeof(s16)
= 8 bytes into the parameter's stack slot, which is discarded when
the function returns. The caller's scan buffer in
itg3200_trigger_handler() is never written to, so
iio_push_to_buffers_with_timestamp() pushes uninitialised stack
contents to userspace via /dev/iio:deviceX every scan -- both a
functional bug (no actual gyroscope or temperature data is
delivered through the triggered buffer) and an information leak.

The non-buffered read_raw() path is unaffected: it goes through
itg3200_read_reg_s16() which uses `&out' on a local s16 value,
where that is correct.

Drop the spurious `&' so the i2c read writes into the caller's
buffer.

https://git.kernel.org/stable/c/15a0b3f33ffb6c78b3de6f69b026ceb09b973dd1

https://git.kernel.org/stable/c/31bbd4b87dd6701fa10e03ba7f6268e49e178d16

https://git.kernel.org/stable/c/63203bd072b613c18c237b906b1c9d2dc4527337

https://git.kernel.org/stable/c/6bdc3023d62ed5c7d591f0eb27a5adb37fb892ae

https://git.kernel.org/stable/c/8654b5e2617819ff4f7c78071dfd0275e971a9b6

https://git.kernel.org/stable/c/90e809376b0f0d1ddec2eec954aecdd2a5b40b0e

https://git.kernel.org/stable/c/b64dd5f3b38911054cbcc570df617e3e8e75e562

https://git.kernel.org/stable/c/cfc3283859cfdeacadf80d5e6880bdf871ffeaa6

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