Markus Burri 7118be7c60 gpio: virtuser: fix potential out-of-bound write ...

If the caller wrote more characters, count is truncated to the max
available space in "simple_write_to_buffer". Check that the input
size does not exceed the buffer size. Write a zero termination
afterwards.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202505091754.285hHbr2-lkp@intel.com/
Signed-off-by: Markus Burri <markus.burri@mt.com>
Link: https://lore.kernel.org/r/20250509150459.115489-1-markus.burri@mt.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

2025-05-13 12:59:30 +02:00

43 KiB

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