netdev - ipv6 udp early demux breaks udp_l3mdev

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <0c7198e6-7dde-917b-9c10-4e1835e38319@cumulusnetworks.com>
Date:   Fri, 14 Apr 2017 16:23:22 -0600
From:   David Ahern <dsa@...ulusnetworks.com>
To:     subashab@...eaurora.org
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Robert Shearman <rshearma@...cade.com>
Subject: ipv6 udp early demux breaks udp_l3mdev_accept=0

Subash:

My understanding of early demux is that it should only match connected
sockets (src/sport + dst/dport are all set). The ipv6 udp early demux
code added in 5425077d73e0c is doing a generic socket lookup which does
not require an exact match and accordingly breaks udp_l3mdev_accept=0.
Please fix.

David