]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
Bluetooth: RFCOMM - Fix missing msg_namelen update in rfcomm_sock_recvmsg()
authorMathias Krause <minipli@googlemail.com>
Sun, 7 Apr 2013 01:51:50 +0000 (01:51 +0000)
committerDavid S. Miller <davem@davemloft.net>
Sun, 7 Apr 2013 20:28:00 +0000 (16:28 -0400)
commite11e0455c0d7d3d62276a0c55d9dfbc16779d691
tree7e3f51263eb0f889a47b7384e3408a912eb5a022
parent4683f42fde3977bdb4e8a09622788cc8b5313778
Bluetooth: RFCOMM - Fix missing msg_namelen update in rfcomm_sock_recvmsg()

If RFCOMM_DEFER_SETUP is set in the flags, rfcomm_sock_recvmsg() returns
early with 0 without updating the possibly set msg_namelen member. This,
in turn, leads to a 128 byte kernel stack leak in net/socket.c.

Fix this by updating msg_namelen in this case. For all other cases it
will be handled in bt_sock_stream_recvmsg().

Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Johan Hedberg <johan.hedberg@gmail.com>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/bluetooth/rfcomm/sock.c