diff options
Diffstat (limited to 'security/selinux/hooks.c')
| -rw-r--r-- | security/selinux/hooks.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index dbeaa783b2a9..00815973d412 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -1433,12 +1433,13 @@ static int current_has_perm(const struct task_struct *tsk, /* Check whether a task is allowed to use a capability. */ static int task_has_capability(struct task_struct *tsk, + const struct cred *cred, int cap, int audit) { struct avc_audit_data ad; struct av_decision avd; u16 sclass; - u32 sid = task_sid(tsk); + u32 sid = cred_sid(cred); u32 av = CAP_TO_MASK(cap); int rc; @@ -1865,15 +1866,16 @@ static int selinux_capset(struct cred *new, const struct cred *old, return cred_has_perm(old, new, PROCESS__SETCAP); } -static int selinux_capable(struct task_struct *tsk, int cap, int audit) +static int selinux_capable(struct task_struct *tsk, const struct cred *cred, + int cap, int audit) { int rc; - rc = secondary_ops->capable(tsk, cap, audit); + rc = secondary_ops->capable(tsk, cred, cap, audit); if (rc) return rc; - return task_has_capability(tsk, cap, audit); + return task_has_capability(tsk, cred, cap, audit); } static int selinux_sysctl_get_sid(ctl_table *table, u16 tclass, u32 *sid) @@ -2037,7 +2039,8 @@ static int selinux_vm_enough_memory(struct mm_struct *mm, long pages) { int rc, cap_sys_admin = 0; - rc = selinux_capable(current, CAP_SYS_ADMIN, SECURITY_CAP_NOAUDIT); + rc = selinux_capable(current, current_cred(), CAP_SYS_ADMIN, + SECURITY_CAP_NOAUDIT); if (rc == 0) cap_sys_admin = 1; @@ -2880,7 +2883,8 @@ static int selinux_inode_getsecurity(const struct inode *inode, const char *name * and lack of permission just means that we fall back to the * in-core context value, not a denial. */ - error = selinux_capable(current, CAP_MAC_ADMIN, SECURITY_CAP_NOAUDIT); + error = selinux_capable(current, current_cred(), CAP_MAC_ADMIN, + SECURITY_CAP_NOAUDIT); if (!error) error = security_sid_to_context_force(isec->sid, &context, &size); @@ -4185,7 +4189,7 @@ static int selinux_sock_rcv_skb_iptables_compat(struct sock *sk, static int selinux_sock_rcv_skb_compat(struct sock *sk, struct sk_buff *skb, u16 family) { - int err; + int err = 0; struct sk_security_struct *sksec = sk->sk_security; u32 peer_sid; u32 sk_sid = sksec->sid; @@ -4202,7 +4206,7 @@ static int selinux_sock_rcv_skb_compat(struct sock *sk, struct sk_buff *skb, if (selinux_compat_net) err = selinux_sock_rcv_skb_iptables_compat(sk, skb, &ad, family, addrp); - else + else if (selinux_secmark_enabled()) err = avc_has_perm(sk_sid, skb->secmark, SECCLASS_PACKET, PACKET__RECV, &ad); if (err) @@ -4705,7 +4709,7 @@ static unsigned int selinux_ip_postroute_compat(struct sk_buff *skb, if (selinux_ip_postroute_iptables_compat(skb->sk, ifindex, &ad, family, addrp)) return NF_DROP; - } else { + } else if (selinux_secmark_enabled()) { if (avc_has_perm(sksec->sid, skb->secmark, SECCLASS_PACKET, PACKET__SEND, &ad)) return NF_DROP; |