diff options
| author | Sasha Levin <sasha.levin@oracle.com> | 2013-11-19 14:25:36 -0500 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2013-11-26 16:40:14 +0200 |
| commit | 2ab68ec927310dc488f3403bb48f9e4ad00a9491 (patch) | |
| tree | 5419c4937fa6350adce1b76e96dd5dd302a19564 | |
| parent | c37dd677988ca50bc8bc60ab5ab053720583c168 (diff) | |
video: kyro: fix incorrect sizes when copying to userspace
kyro would copy u32s and specify sizeof(unsigned long) as the size to copy.
This would copy more data than intended and cause memory corruption and might
leak kernel memory.
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| -rw-r--r-- | drivers/video/kyro/fbdev.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/video/kyro/fbdev.c b/drivers/video/kyro/fbdev.c index 50c857477e4..65041e15fd5 100644 --- a/drivers/video/kyro/fbdev.c +++ b/drivers/video/kyro/fbdev.c @@ -624,15 +624,15 @@ static int kyrofb_ioctl(struct fb_info *info, return -EINVAL; } case KYRO_IOCTL_UVSTRIDE: - if (copy_to_user(argp, &deviceInfo.ulOverlayUVStride, sizeof(unsigned long))) + if (copy_to_user(argp, &deviceInfo.ulOverlayUVStride, sizeof(deviceInfo.ulOverlayUVStride))) return -EFAULT; break; case KYRO_IOCTL_STRIDE: - if (copy_to_user(argp, &deviceInfo.ulOverlayStride, sizeof(unsigned long))) + if (copy_to_user(argp, &deviceInfo.ulOverlayStride, sizeof(deviceInfo.ulOverlayStride))) return -EFAULT; break; case KYRO_IOCTL_OVERLAY_OFFSET: - if (copy_to_user(argp, &deviceInfo.ulOverlayOffset, sizeof(unsigned long))) + if (copy_to_user(argp, &deviceInfo.ulOverlayOffset, sizeof(deviceInfo.ulOverlayOffset))) return -EFAULT; break; } |