3.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sasha Levin <sasha.levin@xxxxxxxxxx> commit 2ab68ec927310dc488f3403bb48f9e4ad00a9491 upstream. 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@xxxxxxxxxx> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/video/kyro/fbdev.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/drivers/video/kyro/fbdev.c +++ b/drivers/video/kyro/fbdev.c @@ -625,15 +625,15 @@ static int kyrofb_ioctl(struct fb_info * } break; 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; } -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html