From: Andy Lutomirski Date: Thu, 22 Aug 2013 18:39:15 +0000 (-0700) Subject: net: Check the correct namespace when spoofing pid over SCM_RIGHTS X-Git-Tag: v4.9.8~7972^2~30 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d661684cf6820331feae71146c35da83d794467e;p=platform%2Fkernel%2Flinux-rpi3.git 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 Reviewed-by: "Eric W. Biederman" Signed-off-by: David S. Miller --- diff --git a/net/core/scm.c b/net/core/scm.c index 03795d0..b4da80b 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) ||