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authorAndy Lutomirski <luto@amacapital.net>2013-08-22 22:39:15 +0400
committerDavid S. Miller <davem@davemloft.net>2013-08-27 21:52:52 +0400
commitd661684cf6820331feae71146c35da83d794467e (patch)
treeca8cc23e3d9da33b3ca739f11c1d6e954105aefe
parentdd5746bf6b48bb837e9f5af14b9b241fc4fdc1ef (diff)
downloadlinux-d661684cf6820331feae71146c35da83d794467e.tar.xz
net: Check the correct namespace when spoofing pid over SCM_RIGHTS
This is a security bug. The follow-up will fix nsproxy to discourage this type of issue from happening again. Cc: stable@vger.kernel.org Signed-off-by: Andy Lutomirski <luto@amacapital.net> Reviewed-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/core/scm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/scm.c b/net/core/scm.c
index 03795d0147f2..b4da80b1cc07 100644
--- a/net/core/scm.c
+++ b/net/core/scm.c
@@ -54,7 +54,7 @@ static __inline__ int scm_check_creds(struct ucred *creds)
return -EINVAL;
if ((creds->pid == task_tgid_vnr(current) ||
- ns_capable(current->nsproxy->pid_ns->user_ns, CAP_SYS_ADMIN)) &&
+ ns_capable(task_active_pid_ns(current)->user_ns, CAP_SYS_ADMIN)) &&
((uid_eq(uid, cred->uid) || uid_eq(uid, cred->euid) ||
uid_eq(uid, cred->suid)) || nsown_capable(CAP_SETUID)) &&
((gid_eq(gid, cred->gid) || gid_eq(gid, cred->egid) ||