diff options
| author | Kulikov Vasiliy <segooon@gmail.com> | 2010-10-29 23:04:33 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-10-30 16:49:38 -0700 |
| commit | ce384d91cd7a4269a1ed5d4307a70aa4c6fa14f2 (patch) | |
| tree | dad07ece7f32cfa73cfe3bf4e31f04c9a4b9a5ef | |
| parent | 3e9ebd3cf48d9181e0931c6fd8f1a7dc4d6cb27c (diff) | |
isdn: mISDN: socket: fix information leak to userland
Structure mISDN_devinfo is copied to userland with the field "name"
that has the last elements unitialized. It leads to leaking of
contents of kernel stack memory.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/isdn/mISDN/socket.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/isdn/mISDN/socket.c b/drivers/isdn/mISDN/socket.c index 3232206406b..7446d8b4282 100644 --- a/drivers/isdn/mISDN/socket.c +++ b/drivers/isdn/mISDN/socket.c @@ -392,6 +392,7 @@ data_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) if (dev) { struct mISDN_devinfo di; + memset(&di, 0, sizeof(di)); di.id = dev->id; di.Dprotocols = dev->Dprotocols; di.Bprotocols = dev->Bprotocols | get_all_Bprotocols(); @@ -672,6 +673,7 @@ base_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) if (dev) { struct mISDN_devinfo di; + memset(&di, 0, sizeof(di)); di.id = dev->id; di.Dprotocols = dev->Dprotocols; di.Bprotocols = dev->Bprotocols | get_all_Bprotocols(); |