Re: [PATCH] tools: hv: Netlink source address validation allows DoS

[Tomas Hozza <thozza@redhat.com>]

Hello.

Just FYI there is already a CVE name CVE-2012-5532 for this issue.

Regards,
Tomas Hozza

----- Original Message -----
> On Thu, Nov 08, 2012 at 10:53:29AM +0100, Tomas Hozza wrote:
> > The source code without this patch caused hypervkvpd to exit when
> > it processed
> > a spoofed Netlink packet which has been sent from an untrusted
> > local user.
> > Now Netlink messages with a non-zero nl_pid source address are
> > ignored
> > and a warning is printed into the syslog.
> > 
> > Signed-off-by: Tomas Hozza <thozza@redhat.com>
> > Acked-by:  K. Y. Srinivasan <kys@microsoft.com>
> > ---
> >  tools/hv/hv_kvp_daemon.c | 8 +++++++-
> >  1 file changed, 7 insertions(+), 1 deletion(-)
> > 
> > diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
> > index 13c2a14..c1d9102 100755
> 
> Why are you setting a .c file to executable permissions?  Something
> is
> really wrong here...
> 
> greg k-h
>