Re: [reiserfs-list] major security bug in reiserfs (may affect SuSE Linux)

Alexander Viro
2001-01-11T00:47:59Z

On Wed, 10 Jan 2001, Chris Mason wrote:

> Ah thanks, that makes more sense. But, copy_to_user is only working on
> namelen bytes, and reclen is bigger than that. So, who is checking the
> value for the buf->current_dir pointer?

Look at the thing again. Especially at the place where reclen is calculated.
Notice the calls of put_user() before and after copy_to_user(). Add them
up. Round.