Date: Mon, 19 Jun 2017 07:02:53 +0000 (UTC) From: Xin LI <delphij@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r320093 - head/usr.sbin/rpc.lockd Message-ID: <201706190702.v5J72rAC094925@repo.freebsd.org>
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Author: delphij Date: Mon Jun 19 07:02:52 2017 New Revision: 320093 URL: https://svnweb.freebsd.org/changeset/base/320093 Log: Check return value of seteuid() and bail out if we fail. MFC after: 2 weeks Modified: head/usr.sbin/rpc.lockd/lock_proc.c Modified: head/usr.sbin/rpc.lockd/lock_proc.c ============================================================================== --- head/usr.sbin/rpc.lockd/lock_proc.c Mon Jun 19 06:48:21 2017 (r320092) +++ head/usr.sbin/rpc.lockd/lock_proc.c Mon Jun 19 07:02:52 2017 (r320093) @@ -276,7 +276,10 @@ get_client(struct sockaddr *host_addr, rpcvers_t vers) /* Regain root privileges, for bindresvport. */ old_euid = geteuid(); - seteuid(0); + if (seteuid(0) != 0) { + syslog(LOG_ERR, "seteuid(0) failed"); + return NULL; + } /* * Bind the client FD to a reserved port. @@ -285,7 +288,10 @@ get_client(struct sockaddr *host_addr, rpcvers_t vers) bindresvport(clnt_fd, NULL); /* Drop root privileges again. */ - seteuid(old_euid); + if (seteuid(old_euid) != 0) { + syslog(LOG_ERR, "seteuid(%d) failed", old_euid); + return NULL; + } /* Success - update the cache entry */ clnt_cache_ptr[clnt_cache_next_to_use] = client;
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