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authorMathias Krause <minipli@googlemail.com>2012-08-15 11:31:47 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-10-02 10:29:36 -0700
commit639edee79eb2035b6fe3976f50a1c5364acc7352 (patch)
treeb891e242addb0d42f802f1d6042b8da270f7d663 /net/bluetooth
parent87c42a1dfd5939d0a24795cd99b3d63daa4e1eff (diff)
Bluetooth: HCI - Fix info leak via getsockname()
[ Upstream commit 3f68ba07b1da811bf383b4b701b129bfcb2e4988 ] The HCI code fails to initialize the hci_channel member of struct sockaddr_hci and that for leaks two bytes kernel stack via the getsockname() syscall. Initialize hci_channel with 0 to avoid the info leak. Signed-off-by: Mathias Krause <minipli@googlemail.com> Cc: Marcel Holtmann <marcel@holtmann.org> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: Johan Hedberg <johan.hedberg@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/bluetooth')
-rw-r--r--net/bluetooth/hci_sock.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 2f6ab5b8f21..bedc768c8cd 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -706,6 +706,7 @@ static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, int *add
*addr_len = sizeof(*haddr);
haddr->hci_family = AF_BLUETOOTH;
haddr->hci_dev = hdev->id;
+ haddr->hci_channel= 0;
release_sock(sk);
return 0;