diff options
Diffstat (limited to 'drivers/connector/cn_proc.c')
| -rw-r--r-- | drivers/connector/cn_proc.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c index 3e92b7d3fcd..fce2000eec3 100644 --- a/drivers/connector/cn_proc.c +++ b/drivers/connector/cn_proc.c @@ -30,6 +30,7 @@ #include <linux/gfp.h> #include <linux/ptrace.h> #include <linux/atomic.h> +#include <linux/pid_namespace.h> #include <asm/unaligned.h> @@ -127,11 +128,11 @@ void proc_id_connector(struct task_struct *task, int which_id) rcu_read_lock(); cred = __task_cred(task); if (which_id == PROC_EVENT_UID) { - ev->event_data.id.r.ruid = cred->uid; - ev->event_data.id.e.euid = cred->euid; + ev->event_data.id.r.ruid = from_kuid_munged(&init_user_ns, cred->uid); + ev->event_data.id.e.euid = from_kuid_munged(&init_user_ns, cred->euid); } else if (which_id == PROC_EVENT_GID) { - ev->event_data.id.r.rgid = cred->gid; - ev->event_data.id.e.egid = cred->egid; + ev->event_data.id.r.rgid = from_kgid_munged(&init_user_ns, cred->gid); + ev->event_data.id.e.egid = from_kgid_munged(&init_user_ns, cred->egid); } else { rcu_read_unlock(); return; @@ -303,6 +304,15 @@ static void cn_proc_mcast_ctl(struct cn_msg *msg, if (msg->len != sizeof(*mc_op)) return; + /* + * Events are reported with respect to the initial pid + * and user namespaces so ignore requestors from + * other namespaces. + */ + if ((current_user_ns() != &init_user_ns) || + (task_active_pid_ns(current) != &init_pid_ns)) + return; + mc_op = (enum proc_cn_mcast_op *)msg->data; switch (*mc_op) { case PROC_CN_MCAST_LISTEN: |