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| author | Mathias Krause <minipli@googlemail.com> | 2012-08-15 11:31:44 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-02 09:47:05 -0700 |
| commit | 9a897ce370b0bbe57961372c67bd0ffc2dd3f7ea (patch) | |
| tree | e97810b11fca7c856ddd83f69670b24137163489 | |
| parent | f9b6caca04a5444f61c1b08ebf04c6f2c6ff2ec9 (diff) | |
| download | lwn-9a897ce370b0bbe57961372c67bd0ffc2dd3f7ea.tar.gz lwn-9a897ce370b0bbe57961372c67bd0ffc2dd3f7ea.zip | |
atm: fix info leak in getsockopt(SO_ATMPVC)
[ Upstream commit e862f1a9b7df4e8196ebec45ac62295138aa3fc2 ]
The ATM code fails to initialize the two padding bytes of struct
sockaddr_atmpvc inserted for alignment. Add an explicit memset(0)
before filling the structure to avoid the info leak.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | net/atm/common.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/atm/common.c b/net/atm/common.c index 22b963d06a10..cc859ad23e82 100644 --- a/net/atm/common.c +++ b/net/atm/common.c @@ -784,6 +784,7 @@ int vcc_getsockopt(struct socket *sock, int level, int optname, if (!vcc->dev || !test_bit(ATM_VF_ADDR, &vcc->flags)) return -ENOTCONN; + memset(&pvc, 0, sizeof(pvc)); pvc.sap_family = AF_ATMPVC; pvc.sap_addr.itf = vcc->dev->number; pvc.sap_addr.vpi = vcc->vpi; |