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media: ov7740: avoid invalid framesize setting

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[ Upstream commit 6e4ab830ac ]

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>
This commit is contained in:
Akinobu Mita
2019-04-17 10:06:39 -04:00
committed by Greg Kroah-Hartman
parent b0e199e134
commit add712b631
1 changed files with 5 additions and 1 deletions
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6
drivers/media/i2c/ov7740.c
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@@ -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;