From bed4d7efb31fd81b3a3c83dc8540197cd0fe81c0 Mon Sep 17 00:00:00 2001 From: Paul Moore Date: Tue, 23 Jul 2013 17:38:40 -0400 Subject: [PATCH] selinux: remove the BUG_ON() from selinux_skb_xfrm_sid() Remove the BUG_ON() from selinux_skb_xfrm_sid() and propogate the error code up to the caller. Also check the return values in the only caller function, selinux_skb_peerlbl_sid(). Signed-off-by: Paul Moore Signed-off-by: Eric Paris --- security/selinux/hooks.c | 8 ++++++-- security/selinux/include/xfrm.h | 5 ++--- 2 files changed, 8 insertions(+), 5 deletions(-) diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index d3555bd..4bc068b 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -3722,8 +3722,12 @@ static int selinux_skb_peerlbl_sid(struct sk_buff *skb, u16 family, u32 *sid) u32 nlbl_sid; u32 nlbl_type; - selinux_skb_xfrm_sid(skb, &xfrm_sid); - selinux_netlbl_skbuff_getsid(skb, family, &nlbl_type, &nlbl_sid); + err = selinux_skb_xfrm_sid(skb, &xfrm_sid); + if (unlikely(err)) + return -EACCES; + err = selinux_netlbl_skbuff_getsid(skb, family, &nlbl_type, &nlbl_sid); + if (unlikely(err)) + return -EACCES; err = security_net_peersid_resolve(nlbl_sid, nlbl_type, xfrm_sid, sid); if (unlikely(err)) { diff --git a/security/selinux/include/xfrm.h b/security/selinux/include/xfrm.h index 60774bc..7605251 100644 --- a/security/selinux/include/xfrm.h +++ b/security/selinux/include/xfrm.h @@ -76,10 +76,9 @@ static inline void selinux_xfrm_notify_policyload(void) } #endif -static inline void selinux_skb_xfrm_sid(struct sk_buff *skb, u32 *sid) +static inline int selinux_skb_xfrm_sid(struct sk_buff *skb, u32 *sid) { - int err = selinux_xfrm_decode_session(skb, sid, 0); - BUG_ON(err); + return selinux_xfrm_decode_session(skb, sid, 0); } #endif /* _SELINUX_XFRM_H_ */ -- 2.7.4