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Date: Thu, 22 Aug 2013 11:39:15 -0700 From: Andy Lutomirski <luto@...capital.net> To: "Eric W. Biederman" <ebiederm@...ssion.com>, security@...nel.org Cc: linux-kernel@...r.kernel.org, netdev@...r.kernel.org, Andy Lutomirski <luto@...capital.net>, stable@...r.kernel.org Subject: [PATCH 1/2] 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@...r.kernel.org Signed-off-by: Andy Lutomirski <luto@...capital.net> --- net/core/scm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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) || -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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