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author | Mathias Krause <minipli@googlemail.com> | 2013-04-07 01:51:48 +0000 |
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committer | David S. Miller <davem@davemloft.net> | 2013-04-07 16:28:00 -0400 |
commit | ef3313e84acbf349caecae942ab3ab731471f1a1 (patch) | |
tree | 9b2fd9a7ce55f7e08fd9d51a5e8525d6bbb9e4c6 /net/ax25/ax25_dev.c | |
parent | 9b3e617f3df53822345a8573b6d358f6b9e5ed87 (diff) | |
download | blackbird-op-linux-ef3313e84acbf349caecae942ab3ab731471f1a1.tar.gz blackbird-op-linux-ef3313e84acbf349caecae942ab3ab731471f1a1.zip |
ax25: fix info leak via msg_name in ax25_recvmsg()
When msg_namelen is non-zero the sockaddr info gets filled out, as
requested, but the code fails to initialize the padding bytes of struct
sockaddr_ax25 inserted by the compiler for alignment. Additionally the
msg_namelen value is updated to sizeof(struct full_sockaddr_ax25) but is
not always filled up to this size.
Both issues lead to the fact that the code will leak uninitialized
kernel stack bytes in net/socket.c.
Fix both issues by initializing the memory with memset(0).
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ax25/ax25_dev.c')
0 files changed, 0 insertions, 0 deletions