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| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2014-04-14 10:49:34 -0300 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2014-06-09 15:54:00 +0200 |
| commit | b331e3acf154ec3e70f80a77cd4396100b506449 (patch) | |
| tree | 58adc129f39d13304a379ccdd8a72b5cb68e70ab | |
| parent | 383b17acfb28a57780d191a455019af5a011188e (diff) | |
| download | lwn-b331e3acf154ec3e70f80a77cd4396100b506449.tar.gz lwn-b331e3acf154ec3e70f80a77cd4396100b506449.zip | |
media: V4L2: ov7670: fix a wrong index, potentially Oopsing the kernel from user-space
commit cfece5857ca51d1dcdb157017aba226f594e9dcf upstream.
Commit 75e2bdad8901a0b599e01a96229be922eef1e488 "ov7670: allow
configuration of image size, clock speed, and I/O method" uses a wrong
index to iterate an array. Apart from being wrong, it also uses an
unchecked value from user-space, which can cause access to unmapped
memory in the kernel, triggered by a normal desktop user with rights to
use V4L2 devices.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
| -rw-r--r-- | drivers/media/i2c/ov7670.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/i2c/ov7670.c b/drivers/media/i2c/ov7670.c index e8a1ce204036..cdd7c1b7259b 100644 --- a/drivers/media/i2c/ov7670.c +++ b/drivers/media/i2c/ov7670.c @@ -1109,7 +1109,7 @@ static int ov7670_enum_framesizes(struct v4l2_subdev *sd, * windows that fall outside that. */ for (i = 0; i < n_win_sizes; i++) { - struct ov7670_win_size *win = &info->devtype->win_sizes[index]; + struct ov7670_win_size *win = &info->devtype->win_sizes[i]; if (info->min_width && win->width < info->min_width) continue; if (info->min_height && win->height < info->min_height) |