Re: [PATCH] block: ioctl: fix information leak to userland

[Jens Axboe]

On 2010-11-04 15:48, Vasiliy Kulikov wrote:
> Structure hd_geometry is copied to userland with 4 padding bytes
> between cylinders and start fields uninitialized on 64-bit platforms.
> It leads to leaking of contents of kernel stack memory.
> 
> Currently there is no memset() in real implementations of getgeo()
> in drivers/block/, so it makes sense to have memset() in blkdev_ioctl().

Thanks, applied.

-- 
Jens Axboe

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/