Re: CVE request: FreeBSD/NetBSD 802.11 kernel memory disclosure

[Dan Rosenberg <dan.j.rosenberg () gmail com>]

On Mon, Jun 20, 2011 at 3:05 PM, Josh Bressers <bressers () redhat com> wrote:
> ----- Original Message -----
> > NetBSD has committed a fix for an issue in the 802.11 stack [1].
> > FreeBSD is also affected and should release a fix shortly. Due to a
> > signedness error in the IEEE80211_IOC_CHANINFO ioctl, a local
> > unprivileged user could cause the kernel to copy large amounts of
> > kernel memory back to the user, disclosing potentially sensitive
> > information. The issue only affects certain non-x86 architectures,
> > such as SPARC.
> >
> > -Dan
> >
> > [1]
> > http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/net80211/ieee80211_ioctl.c?rev=1.56&content-type=text/x-cvsweb-markup&only_with_tag=MAIN
>
> I'm not entirely sure how to assign CVE ids for this. Is the code in
> question shared between FreeBSD and NetBSD, or is it different codebases
> but the same flaw?

Most of the 802.11 code, including the vulnerable code, is shared
between FreeBSD and NetBSD.

-Dan

> Thanks.
>
> --
>    JB