[ Upstream commit 6e4ab830ac6d6a0d7cd7f87dc5d6536369bf24a8 ]
If the requested framesize by VIDIOC_SUBDEV_S_FMT is larger than supported framesizes, it causes an out of bounds array access and the resulting framesize is unexpected.
Avoid out of bounds array access and select the default framesize.
Cc: Wenyou Yang wenyou.yang@microchip.com Cc: Eugen Hristev eugen.hristev@microchip.com Signed-off-by: Akinobu Mita akinobu.mita@gmail.com Signed-off-by: Sakari Ailus sakari.ailus@linux.intel.com Signed-off-by: Mauro Carvalho Chehab mchehab+samsung@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/i2c/ov7740.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/media/i2c/ov7740.c b/drivers/media/i2c/ov7740.c index f5a1ee90a6c5..8a6a7a5929aa 100644 --- a/drivers/media/i2c/ov7740.c +++ b/drivers/media/i2c/ov7740.c @@ -761,7 +761,11 @@ static int ov7740_try_fmt_internal(struct v4l2_subdev *sd,
fsize++; } - + if (i >= ARRAY_SIZE(ov7740_framesizes)) { + fsize = &ov7740_framesizes[0]; + fmt->width = fsize->width; + fmt->height = fsize->height; + } if (ret_frmsize != NULL) *ret_frmsize = fsize;