From 86d6d5a9bb922d67b4ecde01277c39b40ea74b90 Mon Sep 17 00:00:00 2001 From: Vasiliy Kulikov Date: Mon, 14 Feb 2011 13:54:26 +0300 Subject: [PATCH] Bluetooth: sco: fix information leak to userspace commit c4c896e1471aec3b004a693c689f60be3b17ac86 upstream. struct sco_conninfo has one padding byte in the end. Local variable cinfo of type sco_conninfo is copied to userspace with this uninizialized one byte, leading to old stack contents leak. Signed-off-by: Vasiliy Kulikov Signed-off-by: Gustavo F. Padovan Signed-off-by: Greg Kroah-Hartman --- net/bluetooth/sco.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index 0cc91e6da76d7..49cd2e78ba5bd 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -710,6 +710,7 @@ static int sco_sock_getsockopt(struct socket *sock, int level, int optname, char break; } + memset(&cinfo, 0, sizeof(cinfo)); cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle; memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3); -- 2.47.2