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linux-next/net/phonet
Hannes Frederic Sowa bceaa90240 inet: prevent leakage of uninitialized memory to user in recv syscalls
Only update *addr_len when we actually fill in sockaddr, otherwise we
can return uninitialized memory from the stack to the caller in the
recvfrom, recvmmsg and recvmsg syscalls. Drop the the (addr_len == NULL)
checks because we only get called with a valid addr_len pointer either
from sock_common_recvmsg or inet_recvmsg.

If a blocking read waits on a socket which is concurrently shut down we
now return zero and set msg_msgnamelen to 0.

Reported-by: mpb <mpb.mail@gmail.com>
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-18 15:12:03 -05:00
..
af_phonet.c net: remove my future former mail address 2012-06-17 16:29:38 -07:00
datagram.c inet: prevent leakage of uninitialized memory to user in recv syscalls 2013-11-18 15:12:03 -05:00
Kconfig Phonet: kill the ST-Ericsson pipe controller Kconfig 2011-03-09 11:59:33 -08:00
Makefile Net: phonet: Makefile: Remove deprecated kbuild goal definitions 2010-11-22 08:16:14 -08:00
pep-gprs.c net: remove my future former mail address 2012-06-17 16:29:38 -07:00
pep.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
pn_dev.c net: pass info struct via netdevice notifier 2013-05-28 13:11:01 -07:00
pn_netlink.c rtnetlink: Remove passing of attributes into rtnl_doit functions 2013-03-22 10:31:16 -04:00
socket.c net: proc_fs: trivial: print UIDs as unsigned int 2013-08-15 14:37:46 -07:00
sysctl.c net: Convert uses of typedef ctl_table to struct ctl_table 2013-06-13 02:36:09 -07:00