Return-Path: From: Vasiliy Kulikov To: kernel-janitors@vger.kernel.org Cc: Marcel Holtmann , "Gustavo F. Padovan" , "David S. Miller" , Eric Dumazet , Thadeu Lima de Souza Cascardo , Tejun Heo , Jiri Kosina , linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] bluetooth: bnep: fix information leak to userland Date: Sat, 30 Oct 2010 18:26:21 +0400 Message-Id: <1288448782-5582-1-git-send-email-segooon@gmail.com> List-ID: Structure bnep_conninfo is copied to userland with the field "device" that has the last elements unitialized. It leads to leaking of contents of kernel stack memory. Signed-off-by: Vasiliy Kulikov --- Compile tested. net/bluetooth/bnep/core.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/net/bluetooth/bnep/core.c b/net/bluetooth/bnep/core.c index f10b41f..5868597 100644 --- a/net/bluetooth/bnep/core.c +++ b/net/bluetooth/bnep/core.c @@ -648,6 +648,7 @@ int bnep_del_connection(struct bnep_conndel_req *req) static void __bnep_copy_ci(struct bnep_conninfo *ci, struct bnep_session *s) { + memset(ci, 0, sizeof(*ci)); memcpy(ci->dst, s->eh.h_source, ETH_ALEN); strcpy(ci->device, s->dev->name); ci->flags = s->flags; -- 1.7.0.4