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 <segoon@xxxxxxxxxxxx> --- Compile tested. net/bluetooth/sco.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index 960c6d1..926ed39 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -703,6 +703,7 @@ static int sco_sock_getsockopt_old(struct socket *sock, int optname, char __user 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); -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
