Re: [PATCH v4.10] netfilter: nf_conntrack_h323: lost .data_len definition for Q.931/ipv6

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On Wed, Jun 24, 2020 at 02:12:32PM +0200, Pablo Neira Ayuso wrote:
> CC'ing stable@xxxxxxxxxxxxxxx
> 
> On Tue, Jun 09, 2020 at 10:53:22AM +0300, Vasily Averin wrote:
> > Could you please push this patch into stable@?
> > it fixes memory corruption in kernels  v3.5 .. v4.10
> > 
> > Lost .data_len definition leads to write beyond end of
> > struct nf_ct_h323_master. Usually it corrupts following
> > struct nf_conn_nat, however if nat is not loaded it corrupts
> > following slab object.
> > 
> > In mainline this problem went away in v4.11,
> > after commit 9f0f3ebeda47 ("netfilter: helpers: remove data_len usage
> > for inkernel helpers") however many stable kernels are still affected.
> 
> -stable maintainers of: 3.16, 4.4 and 4.9.

Now queued up to 4.4 and 4.9, thanks.  3.16 is end-of-life.

greg k-h



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