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media: ov7740: avoid invalid framesize setting

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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>
This commit is contained in:
Akinobu Mita
2019-04-17 10:06:39 -04:00
committed by Mauro Carvalho Chehab
parent cfe7cc383c
commit 6e4ab830ac
1 changed files with 5 additions and 1 deletions
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6
drivers/media/i2c/ov7740.c
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@@ -785,7 +785,11 @@ 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;