Re: [nft PATCH 4/4] netlink: Avoid potential NULL-pointer deref in netlink_gen_payload_stmt()

[Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>]

On Mon, Jan 20, 2020 at 05:25:40PM +0100, Phil Sutter wrote:
> With payload_needs_l4csum_update_pseudohdr() unconditionally
> dereferencing passed 'desc' parameter and a previous check for it to be
> non-NULL, make sure to call the function only if input is sane.
> 
> Fixes: 68de70f2b3fc6 ("netlink_linearize: fix IPv6 layer 4 checksum mangling")
> Signed-off-by: Phil Sutter <phil@xxxxxx>

Acked-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>

Thanks.