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
| ||
|
Message-Id: <20190501.113101.1983014622975636535.davem@davemloft.net> Date: Wed, 01 May 2019 11:31:01 -0400 (EDT) From: David Miller <davem@...emloft.net> To: willemdebruijn.kernel@...il.com Cc: netdev@...r.kernel.org, David.Laight@...lab.com, ebiederm@...ssion.com, willemb@...gle.com Subject: Re: [PATCH net v2] packet: in recvmsg msg_name return at least sizeof sockaddr_ll From: Willem de Bruijn <willemdebruijn.kernel@...il.com> Date: Mon, 29 Apr 2019 11:46:55 -0400 > From: Willem de Bruijn <willemb@...gle.com> > > Packet send checks that msg_name is at least sizeof sockaddr_ll. > Packet recv must return at least this length, so that its output > can be passed unmodified to packet send. > > This ceased to be true since adding support for lladdr longer than > sll_addr. Since, the return value uses true address length. > > Always return at least sizeof sockaddr_ll, even if address length > is shorter. Zero the padding bytes. > > Change v1->v2: do not overwrite zeroed padding again. use copy_len. > > Fixes: 0fb375fb9b93 ("[AF_PACKET]: Allow for > 8 byte hardware addresses.") > Suggested-by: David Laight <David.Laight@...lab.com> > Signed-off-by: Willem de Bruijn <willemb@...gle.com> Applied and queued up for -stable.
Powered by blists - more mailing lists